- Online: www.REI.com
- URL for this product:
- From the U.S. and Canada — Call 1-800-426-4840
- Mon. through Sun., 4 a.m. through 11 p.m. PT.
- International — Call 1-253-891-2500
- Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
REI Mars 80 Pack
The REI Member Dividend
The REI dividend is a unique benefit of membership in the REI co-op. It's comprised of your member refund—typically 10% back on eligible purchases—and/or your REI Visa® card rebates.
Each March, active REI members and REI Visa cardholders who earned a rebate receive a refund in the form of an annual dividend notice.
Only active members receive annual dividend notices. To maintain your active status as an REI member, you need to make net merchandise or shipping purchases of at least $10 per year, unless you joined that year. Member numbers are issued in one name and only that person receives the member refund. Your number can be used by others in your family, but it cannot be transferred to someone else.
- Learn how we calculate the member dividend.
- Find out how to redeem your dividend.
- Learn when dividends expire.
Questions? Call us at 1-800-426-4840 for more about your dividend or its redemption.
Built to handle heavy loads with all the creature comforts, the newly updated REI Mars 80 pack handles extended backpacking in any season.
- Precurved shoulder straps match your anatomy for nonbinding comfort on and off the trail
- With a "rip-and-stick" torso adjustment, shoulder strap system easily slides along pack's frame to fit torsos of varying lengths
- Dual-density foam padded back panel provides a comfortable and supportive fit when carrying heavy loads
- Precurved hipbelt is designed to cradle hip bones for a natural fit and to distribute weight without sagging
- Hipbelt webbing system allows you to use a natural forward pulling motion for quick, easy cinching and precise adjustment
- Enjoy dual access to pack via the top-loading opening and the horseshoe-shape, zippered front panel opening, which works like a duffel opening
- Removable top lid pocket with water repellent zipper lets you stash the essentials you want to bring into tent; pack can stay outside or in vestibule
- Zippered pocket under lid stores maps and keys, spare batteries and other small essentials
- Front panel features a new and improved stretch-woven zippered pocket with easy access for packing often-used gear
- Internal sleeping bag compartment is created by a zippered divider, separating it from gear and clothes in the main compartment
- Utilizing 4 buckles, the pack's streamlined compression system lets you cinch and strap down loads for jostle-free carrying
- Concave head pod at the top of pack gives your head freedom of movement—no more staring at the ground
- 2 mesh side pockets hold water bottles, energy bars and other essentials you want close at hand
- Side hipbelt pocket stores those small essentials you want at your fingertips, such as lip balm and sunscreen
- Lash points on the other side of hipbelt let you attach camera and GPS pouches
- Lash straps on bottom of pack let you attach sleeping pad
- Hydration-compatible design features an internal reservoir sleeve and dual exit ports for drinking tube (hydration reservoir sold separately)
Imported.
Item 795513
| Specification |
| ||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Best use |
| ||||||||||||||||||||||||||||||||||||||||||
| Frame type | |||||||||||||||||||||||||||||||||||||||||||
| Backpack style | |||||||||||||||||||||||||||||||||||||||||||
| Ultralight | |||||||||||||||||||||||||||||||||||||||||||
| Gear capacity (L) | |||||||||||||||||||||||||||||||||||||||||||
| Gear capacity (cu. in.) | |||||||||||||||||||||||||||||||||||||||||||
| Weight | |||||||||||||||||||||||||||||||||||||||||||
| Weight - metric | |||||||||||||||||||||||||||||||||||||||||||
| Adjustable torso | |||||||||||||||||||||||||||||||||||||||||||
| Fits torso | |||||||||||||||||||||||||||||||||||||||||||
| Fits waist/hips | |||||||||||||||||||||||||||||||||||||||||||
| Material(s) | |||||||||||||||||||||||||||||||||||||||||||
| Frame material | |||||||||||||||||||||||||||||||||||||||||||
| Number of stays | |||||||||||||||||||||||||||||||||||||||||||
| Suspended mesh back panel | |||||||||||||||||||||||||||||||||||||||||||
| Pack loading | |||||||||||||||||||||||||||||||||||||||||||
| Pack access | |||||||||||||||||||||||||||||||||||||||||||
| Number of exterior pockets | |||||||||||||||||||||||||||||||||||||||||||
| Sleeping bag compartment | |||||||||||||||||||||||||||||||||||||||||||
| Raincover included | |||||||||||||||||||||||||||||||||||||||||||
| Gender |
REI Mars 80 Pack Customer Reviews
REVIEW SNAPSHOT®
by PowerReviewsPros
- Large capacity (56)
- Comfortable (52)
- Good padding (48)
- Easy to load (45)
- Good suspension (44)
Cons
- Heavy (15)
- Heavy / bulky (4)
- Not enough pockets (4)
- Restricts movement (4)
- Weak seams (4)
Best Uses
- Extended trips (51)
- Heavy loads (44)
- Travel (22)
- Wet weather (14)
- Day hikes (8)
- Reviewer Profile:
- Avid adventurer (30), Casual adventurer (22), Outdoor professional (3)
- What Is Your Gear Style:
- Comfort driven (34), Survivalist / minimalist (21)
- Was this a gift?:
- No (36)
Reviewed by 58 customers
Sort by
Displaying reviews 1-10
Previous | Next »
Pros
- Comfortable
- Easy To Load
- Good Suspension
- Large Capacity
Cons
- Heavy
Best Uses
- Heavy Loads
- Travel
Comments about REI Mars 80 Pack:
I bought this backpack based on the reviews of the site and I couldn't make a better purchase.
I used it for my trip to the 2010 Soccer World Cup in South Africa and was the best experience. The bag has a great capacity and is easy to handle. I traveled around the country, visited 10 cities and went to the Safari in the Kruger. The bag performed as expected and was very comfortable while traveling.
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Bottom Line Yes, I would recommend this to a friend
Images shared by jmenendez
Was this review helpful? Yes / No
- You may also flag this review
Pros
- Comfortable
- Good Padding
- Highly Adjustable
- Large Capacity
Cons
- Weak Seams
Best Uses
- Extended Hikes
- Travel
Comments about REI Mars 80 Pack:
Worked well for two, 4 day trips. I'm not a minimalist but I was sort of shocked at how fast an 80 pack would fill up. Sturdy seams, but definitely not water proof. Comfortable on the hips, but doesn't sit as snug on the shoulders as I like. Doesn't sit against your back too well, but lasted for the hikes without any back or joint pain.
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Pros
- Comfortable
- Durable
- Easy To Load
- Good Padding
- Good Suspension
- Large Capacity
- Sturdy
Cons
Best Uses
- Extended Hikes
- Heavy Loads
Comments about REI Mars 80 Pack:
This is an absolutely comfortable pack to carry medium to heavy loads with. It's not very fancy or high-tech, but it carries your gear exceptionally well. The back panel is sturdy and provides good protection from your gear. The front pocket holds lots of gear and the water bottle pockets are large enough to lock in your bottle so that it never falls out. The main compartment is enormous and the hip belt stays put supporting most of the weight in your pack so even though you are carrying a lot of weight, you don't get fatigued. Also the lid pockets are great for keeping smaller gear organized. When I think of this pack, I think this pack is "just right" for me.
- Was this a gift?:
- No
Bottom Line Yes, I would recommend this to a friend
Images shared by NJCMQ8026
(1 of 1 customers found this review helpful)
Was this review helpful? Yes / No
- You may also flag this review
Pros
- Easy To Load
- Highly Adjustable
- Large Capacity
Cons
- Heavy
Best Uses
- Heavy Loads
- Travel
Comments about REI Mars 80 Pack:
This is an extremely large pack, and I love it. I purchased on recommendation from an REI rep who also helped me size the pack. It has been used mainly for a multi-week hostel trip through Europe and worked extremely well. I matched it with a separately purchased cover/bag for airline travel which helped immensely. The only reason for the less than perfect rating is now that I'm back, the pack is basically too large for everyday/overnight trips, though it can be cinched down quite thoroughly.
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Pros
- Comfortable
- Good Padding
- Good Suspension
- Highly Adjustable
- Large Capacity
Cons
- Zipper Snags
Best Uses
- Travel
Comments about REI Mars 80 Pack:
The Mars 80 worked well for my two week European trip. Although a bit larger than I usually use for hiking in Oregon, I will use it for extended trips abroad. Overall very satisfied.
- What Is Your Gear Style:
- Minimalist
- Was this a gift?:
- No
Pros
- Comfortable
- Easy To Load
- Good Suspension
- Large Capacity
Cons
- Heavy
Best Uses
- Extended Hikes
- Heavy Loads
Comments about REI Mars 80 Pack:
I have used this pack on a few outings now and couldn't be happier. My most recent outing was Bow hunting for Elk in Colorado. After a successful hunt my pack was loaded down with over 100 lbs. inside the pack and attached to the outside. The pack out was over 5 miles in some very rough country. At the end of the day I was not sore at all. The pack held up very well and kept my load balanced and in place. Again, I couldn't be happier with my pack.
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Pros
- Comfortable
- Good Padding
- Good Suspension
- Large Capacity
- Lightweight
- Plenty of pockets
Cons
- No bottom pocket
Best Uses
- Extended Hikes
- Heavy Loads
- Travel
- Wet Weather
Comments about REI Mars 80 Pack:
I took this bag on the John Muir Trail and found it to be extremely comfortable compared to my friends Kelty and Osprey bags. I brought along a rain cover for it but all the zippers have weather resistant seals which help if it terrential down pours before you get a chance to put one on. The only downside I found was that although it has a front pocket that opens to show the entire inside, it doesn't allow you to access the very bottom area without pulling out some of the stuff in the middle.
But having it be as comfortable as it is and for the price I would absolutely recommend this bag to anyone looking to take it on an exteneded trip!
- What Is Your Gear Style:
- Minimalist
- Was this a gift?:
- No
Pros
- Comfortable
- Easy To Load
- Good Padding
- Good Suspension
- Highly Adjustable
- Large Capacity
Cons
- Heavy
Best Uses
- Travel
Comments about REI Mars 80 Pack:
I bought this pack more for travel than for hard core backpacking. At this large size I was able to pack for a 2 week family trip to Florida, then turn around and pack for 4 days at Cub Scout Camp, and then repack again for a 5 day trip to Las Vegas. Each time it was a breeze to load up and carry between transportation modes. It handled each trip very well and is ready for more!
For the flight to Vegas I did put it in a REI backpack duffle to protect it and worked great too. (My wife did get a chuckle out of my putting my bag in a bag.)
So far I have been very happy with the pack as multifunctional luggage. If/When I go on a serious backpack trip I will have to be careful though not to fill it. At this size I would not be able to carry it all day if it was full.
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Pros
- Comfortable
- Easy To Load
- Good Padding
- Good Suspension
- Highly Adjustable
- Large Capacity
Cons
- Heavy
Best Uses
- Extended Hikes
Comments about REI Mars 80 Pack:
Borrowed from a friend to use on a three day Mt Rainier climb and it did great, plenty of pockets for organization and easily held all my needed gear, gave it four stars because the pack seems a bit heavy for cold climbing conditions when clothing acts as padding other than that a great product.
- What Is Your Gear Style:
- Minimalist
- Was this a gift?:
- No
Pros
- Comfortable
- Easy To Load
- Good Suspension
- Highly Adjustable
- Large Capacity
- Lightweight
Cons
Best Uses
- Day Hikes
- Extended Hikes
- Heavy Loads
- Light Loads
Comments about REI Mars 80 Pack:
I bought this pack for a trip to CO and it was well worth every penny. I easily loaded up 30-40 pounds of gear for our hikes and I never once felt any pain or strain in my back or shoulders. All of the load was properly carried to my hips. The straps at the top helped to easy any weight I did feel.
There were lots of pockets and dividers which helped make packing and retrieval easy. I love this backpack!
- What Is Your Gear Style:
- Comfort Driven
- Was this a gift?:
- No
Displaying reviews 1-10
Previous | Next »
How are we doing? Give us feedback on this page.
-
Camp & Hike
- GEAR
- Backpacks
- Bivy Sacks
- Camp Furniture
- Hammocks and Cots
- Sleeping Bags
- Sleeping Pads
- Stuff Sacks
- Tents & Shelters
- Water Bottles
- Water Treatment
- All Camp/Hike Gear
- GADGETS AND ELECTRONICS
- Binoculars
- Camp Tools
- Compasses
- Electronics
- Flashlights
- GPS
- Headlamps
- Knives
- Lanterns
- Radios
- All Gadgets and Electronics
- CAMP KITCHEN
- Coffee
- Cookware
- Coolers
- Cups and Mugs
- Food
- Plates and Bowls
- Stoves
- Tables
- Utensils
- Water Storage
- All Camp Kitchen
-
Climb
- CLIMBING GEAR
- Ascenders
- Belay/Rappel
- Carabiners
- Climbing Chalk
- Climbing Harnesses
- Climbing Helmets
- Climbing Holds
- Climbing Packs
- Crash Pads
- Rock Protection
- Pulleys
- Quickdraws
- Rock Climbing Shoes
- Ropes
- Caving and Canyoneering
- Webbing and Cord
- Slings and Runners
- Slacklines
- All Climbing Gear
- SNOW AND ICE
- Avalanche Safety
- Crampons
- Glacier Glasses
- Ice Axes
- Ice Tools
- Mountaineering Boots
- Snow and Ice Protection
- All Snow and Ice
-
Cycle
- BIKES
- Cruiser Bikes
- Comfort Bikes
- Folding Bikes
- Kids' Bikes
- Hybrid Bikes
- Mountain Bikes
- Road Bikes
- Urban Bikes
- All Bikes
- CLOTHING/HELMETS
- Cycling Gloves
- Cycling Helmets
- Cycling Jackets
- Cycling Jerseys
- Cycling Shoes
- Cycling Shorts
- Cycling Socks
- Cycling Tights & Pants
- Arm/Leg Warmers
- All Cycling Clothes
- BIKE ACCESSORIES
- Bike Computers
- Bike Lights
- Bike Locks
- Bike Pumps
- Bike Racks
- Bike Trailers
- Bike Trainers
- Hydration
- Panniers/Bike Bags
- All Bike Accessories
-
Fitness
- FITNESS CLOTHING
- Men's Running Clothing
- Men's Swimming
- Men's Triathlon Clothing
- Men's Yoga Clothing
- Women's Running Clothing
- Women's Swimming
- Women's Triathlon Clothing
- Women's Yoga Clothing
- All Fitness Clothing
- FITNESS FOOTWEAR
- Men's Cross-Training Shoes
- Men's Road-Running Shoes
- Men's Trail Running Shoes
- Women's Cross-Training Shoes
- Women's Road-Running Shoes
- Women's Trail Running Shoes
- All Fitness Footwear
- FITNESS GEAR
- Energy Food
- Exercise Equipment
- GPS Sports Watches
- Gym Bags
- Heart Rate Monitors
- Hydration
- Pedometers
- Running Packs
- Strollers
- All Fitness Gear
- FITNESS SHOPS
- Cycling Shop
- Running Shop
- Swimming Shop
- Triathlon Shop
- Yoga Shop
-
Run
- MEN'S RUNNING CLOTHES
- Men's Running Shirts
- Men's Running Shorts
- Men's Pants and Tights
- Men's Running Hats
- Men's Running Jackets
- Men's Running Socks
- Men's Running Gloves
- All Men's Running Clothes
- WOMEN'S RUNNING
- Women's Running Shirts
- Women's Running Shorts
- Women's Pants and Tights
- Women's Running Hats
- Women's Running Jackets
- Sports Bras
- Women's Running Socks
- Women's Running Gloves
- All Women's Running Clothes
- RUNNING SHOES
- Men's Cross-Training Shoes
- Men's Road Running Shoes
- Men's Trail Running Shoes
- Men's Minimalist Running Shoes
- Women's Cross-Training Shoes
- Women's Road Running Shoes
- Women's Trail Running Shoes
- Women's Minimalist Running Shoes
- All Running Footwear
-
Paddle
- KAYAKING
- Kayaks
- Cockpit Covers
- Kayak Accessories
- Kayak Carts
- Kayak Paddles
- Safety Equipment
- Spray Skirts
- CANOEING
- Canoes
- Canoe Paddles
- Canoe Packs
- Canoe Accessories
- PADDLEBOARDING
- Paddleboards
- Paddleboard Paddles
- CLOTHING AND PFDs
- Dry Suits
- Paddling Footwear
- Paddling Gloves
- Paddling Jackets
- PFDs
- Rashguards
- Wetsuits
- All Paddling Clothing
-
Snowsports
- DOWNHILL SKIING
- Downhill Skis
- Downhill Ski Bindings
- Downhill Ski Boots
- Ski Bags
- Ski Goggles
- Ski Helmets
- Ski Packs
- Downhill Ski Poles
- Men's Downhill Ski Clothing
- Women's Downhill Ski Clothing
- Gloves, Hats and Socks
- All Downhill Skiing
- XC AND BACKCOUNTRY
- Cross-Country Skiing
- Backcountry Skiing
- Nordic Touring
- Metal-Edge Touring
- Race/Performance Skiing
- Cross-Country Ski Tuning
- Cross-Country Ski Waxes
- Women's XC Clothing
- Kids' XC Ski Gear
- All Cross-Country
- All Tele/Randonee
- SNOWBOARDING
- Snowboards
- Snowboard Bags
- Snowboard Bindings
- Snowboard Boots
- Snowboard Goggles
- Snowboard Helmets
- Snowboard Packs
- Stomp Pads
- Men's Snowboard Clothing
- Women's Snowboard Clothing
- Gloves, Hats and Socks
- All Snowboarding
-
Travel
- LUGGAGE
- Carry-On Luggage
- Travel Packs
- Wheeled Backpacks
- Wheeled Duffels
- Wheeled Luggage
- Kids' Luggage
- Bike Travel Cases
- Ski Bags
- All Luggage
- DAY BAGS
- Camera Bags
- Daypacks
- Duffel Bags
- Handbags
- Laptop Bags
- Messenger Bags
- Shoulder Bags
- Travel Totes
- All Day Bags
- PACKING
- Luggage Locks
- Luggage Tags
- Organizers
- Packing Cubes
- Packing Folders
- Pouches
- Electronics Cases
- Toiletry Kits
- All Packing
-
Men
- MEN'S JACKETS
- Casual Jackets
- Down Jackets
- Fleece Jackets
- Insulated Jackets
- Rain Jackets
- Running Jackets
- Wind Shells
- Ski Jackets
- Snowboard Jackets
- Soft Shell Jackets
- All Men's Jackets
- MEN'S CLOTHING
- Pants
- Shirts
- Shorts
- Sweaters
- Swimming
- Underwear
- Vests
- Footwear
- Tall Clothing
- All Men's Clothing
- MEN'S ACCESSORIES
- Balaclavas
- Bandanas
- Belts
- Gaiters
- Gloves and Mittens
- Hats
- Headwear
- Socks
- Sunglasses
- Watches
- All Accessories
-
Women
- WOMEN'S JACKETS
- Casual Jackets
- Down Jackets
- Fleece Jackets
- Insulated Jackets
- Rain Jackets
- Running Jackets
- Wind Shells
- Ski Jackets
- Snowboard Jackets
- Soft Shell Jackets
- All Women's Jackets
- WOMEN'S CLOTHING
- Footwear
- Pants
- Shirts
- Shorts
- Skirts and Dresses
- Sweaters
- Swimming
- Underwear
- Vests
- Petite Clothing
- Plus Sizes
- All Women's Clothing
- WOMEN'S ACCESSORIES
- Belts
- Gaiters
- Gloves and Mittens
- Hats
- Headwear
- Scarves
- Socks
- Sports Bras
- Sunglasses
- Watches
- All Accessories
-
Kids
- KIDS' SHOPS
- Boys' Clothing
- Girls' Clothing
- Infant & Toddler Clothing
- Kids' Outerwear
- Kids' Shoes
- Kids' Ski Clothing
- Kids' Snowboard Clothing
- Eco-Conscious
- All Kids'
- ACCESSORIES
- Hats
- Gloves and Mittens
- Socks
- Sunglasses
- Toys
- Underwear
- Water Bottles
- All Kids' Accessories
-
Footwear
- MEN'S FOOTWEAR
- Men's Boots
- Men's Sandals
- Men's Shoes
- Men's Slippers
- Men's Wide Sizes
- Men's Socks
- WOMEN'S FOOTWEAR
- Women's Boots
- Women's Sandals
- Women's Shoes
- Women's Slippers
- Women's Narrow Sizes
- Women's Wide Sizes
- Women's Socks
- KIDS' FOOTWEAR
- Kids' Boots
- Kids' Sandals
- Kids' Shoes
- Kids' Slippers
- Kids' Socks
- FOOTWEAR ACCESSORIES
- Gaiters
- Insoles
- Laces
- Treatments
- Winter Traction
- Brands
-
All
- Backcountry Skiing Shop
- Backpacks
- Binoculars
- Bikes
- Books and Maps
- Camping and Hiking
- Car Racks
- Climbing
- Cross-Country Skiing
- Cycling
- Dog Gear
- Downhill Skiing Shop
- Electronics
- Fitness
- Gift Cards
- GPS
- Hammocks
- Helmet Cams
- Jackets
- Kids'
- Luggage and Day Bags
- Made in the USA
- Men's Clothing
- Men's Shoes and Boots
- Outdoor Lifestyle
- Paddling
- Running
- Sale & Clearance
- Sleeping Bags
- Snowboarding Shop
- Snowshoeing Shop
- Snowsports
- Strollers
- Deals
- REI Gift Cards
- Buy now!
- Check your REI gift card balance
- REI Membership
- REI member benefits include an annual refund (typically 10% on eligible purchases).
- Join REI today!
- Sign up for REI Gearmail®
- and get 15% off selected items!
- Store Locator
- Locate an REI store near you.
-
- Company Info
- About REI
- Jobs at REI
- 100% Satisfaction Guarantee
- Corporate & Group Sales
- Privacy Policy
- Terms of Use
- Site Rules
- California Transparency in Supply Chains Act - REI's Disclosure
- REI Membership
- Become an REI Member
- Member Help
- Find Membership Number
- Dividend Lookup
- Apply for an REI Visa® Card
- Manage Your REI Visa® Card
- We Care
- Stewardship
- Volunteer
- Eco-Conscious Gear
- Expert Outdoor Advice
- Expert Advice Articles
- Outdoor Videos
- REI Outdoor School
- Store Events
- Online Affiliate Program
- Become an REI Affiliate
- Gift Registry
- Shop All Brands
- Shop Our Catalogs
- Shop All Categories
- Help
- Help Section
- Contact Us
- Live Help
- Order Status
- Return Policy
- Shipping Info
- REI Coupon
- 1-800-426-4840
- Product Safety & Recalls