Filter and Purifier Accessories > 3+ stars (6)
Guyot Designs TapGuard- Price: $14.95
- (22 Reviews)
SteriPEN Sigg Bottle Adapter- Reduced to: $1.93
- Originally: $2.95
- (1 Review)
SteriPEN Water Bottle Prefilter- Price: $14.00
- (3 Reviews)
MSR SweetWater SiltStopper- Price: $19.95
- (5 Reviews)
CamelBak Filter Adapter- Price: $7.00
- (7 Reviews)
Katadyn Carbon Cartridge- Price: $14.95
- (1 Review)
How are we doing? Give us feedback on this page.
Shopping Cart - |
- Log In or Register
- Store Locator
- |
- Email Sign-Up
- |
- 1-800-426-4840
-
Camping & Hiking
- Gear
- Air Mattresses
- Backpacks
- Bivy Sacks
- Camp Furniture
- Sleeping Bags
- Sleeping Pads
- Tents
- Water Bottles
- Water Treatment
- All Camp/Hike Gear
- Gadgets and Electronics
- Binoculars
- Compasses
- Flashlights
- GPS
- Headlamps
- Knives
- Lanterns
- Camp Tools
- Radios
- All Gadgets and Electronics
- Camp Kitchen
- Coffee
- Containers
- Cookware
- Coolers
- Dishes and Utensils
- Food
- Stoves
- Tables
- All Camp Kitchen
-
Climbing
- Climbing Gear
- Aid 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
- All Climbing Gear
-
Cycling
- 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
-
Fitness
- Fitness Clothing
- Men's Running Clothing
- Men's Swimming
- Men's Triathlon Clothing
- Women's Running Clothing
- Women's Swimming
- Women's Triathlon Clothes
- 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
-
Paddling
- Kayaking
- Kayaks
- Kayak Accessories
- Kayak Carts
- Kayak Paddles
- Safety Equipment
- Spray Skirts
- All Kayaking Gear
- Canoeing
- Canoes
- Canoe Accessories
- Canoe Carts
- Canoe Paddles
- Canoe Yokes
- Canoe Flotation
- All Canoeing Gear
- Clothing and PFDs
- Dry Suits and Tops
- Paddling Gloves
- PFDs
- Rashguards
- Spray Wear
- Wet Suits
- All Paddling Clothing
-
Snowsports
- Alpine Skiing
- Alpine Skis
- Alpine Ski Bindings
- Alpine Ski Boots
- Ski Bags
- Ski Goggles
- Ski Helmets
- Ski Packs
- Alpine Ski Poles
- Men's Alpine Ski Clothing
- Women's Alpine Ski Clothing
- Gloves, Hats and Socks
- All Alpine 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
- Men's XC Clothing
- Women's XC Clothing
- Kids' XC Ski Gear
- All Cross-Country
- All Tele/Randonee
-
Travel
- Luggage
- Carry-On Luggage
- Travel Packs
- Wheeled Backpacks
- Wheeled Duffels
- Wheeled 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
-
Men's
- 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's
- 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
- Sleepwear
- Sweaters
- Swimming
- Underwear
- Vests
- Petite Clothing
- Plus Sizes
- All Women's Clothing
- Women's Accessories
- Belts
- Gaiters
- Gloves and Mittens
- Hats
- Headwear
- Jewelry
- Scarves
- Socks
- Sports Bras
- Sunglasses
- Watches
- All Accessories
-
Kids'
- Kids' Shops
- Kids' Winter Outfits
- Boys' Clothing
- Girls' Clothing
- Infant & Toddler Clothing
- Kids' Outerwear
- Kids' Shoes
- Kids' Ski Clothing
- Kids' Snowboard Clothing
- Eco-Conscious
- All Kids'
-
Shoes & Boots
- Men's Footwear
- Men's Boots
- Men's Extended Sizes
- Men's Sandals
- Men's Shoes
- Men's Slippers
- Men's Socks
- Women's Footwear
- Women's Boots
- Women's Extended Sizes
- Women's Sandals
- Women's Shoes
- Women's Slippers
- Women's Socks
- Kids' Footwear
- Kids' Boots
- Kids' Sandals
- Kids' Shoes
- Kids' Slippers
- Kids' Socks
- Footwear Accessories
- Gaiters
- Insoles
- Laces
- Treatments
- Winter Traction
- Footwear Gifts
- Footwear Sale and Clearance
- All Footwear
- Brands
-
All Categories
- Alpine Skiing Shop
- Backcountry Skiing Shop
- Backpacks
- Binoculars
- Bikes
- Books and Maps
- Camping and Hiking
- Car Racks
- Climbing
- Cross-Country Skiing
- Cycling
- Dog Gear
- Electronics
- Fitness
- Gift Cards
- Gift Center
- GPS
- Hammocks
- Jackets
- Kids'
- Luggage and Day Bags
- REI Gift Cards
- Fast, easy and one size fits all.
- Buy now!
- 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
- Request an REI Catalog
- REI Membership
- Become an REI Member
- Member Help
- Apply for an REI Visa® Card
- We Care
- REI Gives
- 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
- Help
- Help Section
- Contact Us
- Live Help
- Order Tracking
- Returns and Exchanges
- Shipping Info
- 1-800-426-4840
- Product Safety Recalls
Find REI on:
Facebook 
Twitter 
YouTube 
MySpace 
Flickr