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Designed for weight-conscious solo backpackers who still want a high degree of livability, the Sea to Summit Alto TR 1 tent has nearly vertical walls and a minimum trail weight of only 2 lbs. 1 oz.

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Features

  • Unique Tension Ridgeâ„¢ architecture with an inverted brow pole allows for extensive interior living space, increased ventilation and a higher door
  • The oversize Apex Vent™—positioned at the highest point of the tent—efficiently expels warm air to prevent condensation and can be zipped closed from inside the tent
  • Adjustable vents at the base of the tent allow you to control airflow and effectively manage humidity and condensation in wet conditions without letting the rain in
  • In wet conditions, set up the rainfly first to keep the inner tent and your gear dry; do the reverse when packing up
  • Rainfly can be rolled up to the Tension Ridge for stargazing, then deployed quickly and secured from inside the tent when needed
  • The Lightbarâ„¢ pole storage sack can be mounted at the tent peak; slide in a headlamp or 2 and its semi-rigid, translucent material delivers soft illumination to the whole tent
  • High tent door allows for easy entry and exit, and better views of the outside when you're within
  • Machined aluminum clips—more durable than plastic—attach the pole to the inner foot with ease
  • 9 Ground Control Light tent stakes, made from 7075-T6 hardened aluminum, have a multi-notch design that helps you to attach the tent close to the ground, even in hard terrain
  • Adjustable peg-out points at each corner and on the doors give you flexibility with where you place your stakes
  • 4 Ground Control guylines can be attached or removed as needed with quick-connect V-toggles; easily control their length with integrated adjusters
  • The 3-piece, modular FairShare storage sack system allows you to easily split the load with a friend; after setup, the stuff sacks transform into gear storage pockets
  • The combination of DAC Featherlite NSL and Pressfit pole segments with varying diameters maximizes strength while minimizing weight
  • Optional accessories (not included): gear loft for additional storage; 2 footprint options

Imported.

View all Sea to Summit Backpacking Tents

Technical Specs

Best Use

Backpacking

Seasons

3-season

Sleeping Capacity

1-person

Minimum Trail Weight

2 lbs. 1 oz.

Fly / Footprint Pitch Weight

1 lb. 11.3 oz.

Packaged Weight

2 lbs. 7.2 oz.

Packed Size

4.3 x 17.7 inches

Floor Dimensions

84.5 x 42/24 (L x W head/foot) inches

Floor Area

19.5 square feet

Vestibule Area

7.5 square feet

Peak Height

42.5 inches

Number of Doors

1 door

Number of Poles

1

Pole Material

Aluminium DAC TH72M

Pole Diameter

8.7/9.5 millimeters

Canopy Fabric

15-denier polyester mesh

Floor Fabric

15-denier ripstop nylon

Rainfly Fabric

15-denier ripstop nylon

Footprint Included

No

Ultralight

Yes

Design Type

Semifreestanding

Reviews
17 reviews with an average rating of 4.4 out of 5 stars

Ratings Snapshot

Product Rating

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arin k.
Rated 2.0 out of 5 stars

Poor 1P Design

3 years ago

1) should have made it freestanding for 2 more ounces, having to stake out the two edges for a 1P tent considering the target audience is 100% no buy. 2) for the cost the nemo the NEMO Dragonfly 1p is currently top dog. even the bikepack version is better then this one. 3) how difficult would it have been to add interior mesh pockets of various types. 4) to setup this thing is pain in the butt...1P target audience is typically hiking long days and looking for quick efficient no mess no fuss setup. Anyways lot more things that make this 1P tent at its price point a pretty bad buy. Sorry sea to summit I do like your other products but I would suggest get a lot of feedback work on multiple iterations ...you can do way better.

Originally posted on Sea to Summit
Rich C.
Rated 5.0 out of 5 stars

I love the tent. So

2 years ago

[This review was collected as part of a promotion.] I love the tent. So well thought out. Genius really!

Originally posted on Sea to Summit
Eriq P.
Rated 5.0 out of 5 stars

Best Tent I Own

2 years ago

[This review was collected as part of a promotion.] As an adventure guide I work with LOTS of equipment - from rock, tree and ice climbing, to caving, mountain biking, wilderness survival - I am constantly looking for the best gear to make my outdoor adventures enjoyable, both for my clients and for myself. When it comes to overnight and multi-day programming, I have gone through nearly a dozen tents over the past 20 years. Generally my go to brand for personal use has been Big Agnes. Until I tried the Sea to Summit Alto TR2. The Alto TR2 is easy to set up, works great for star gazing on clear nights, and provides plenty of weather proofing for rain and wind. As a semi-free standing tent, it is easy to move around when trying to find the optimal footprint, and set-up and take down is a breeze. The double-door vestibules mean I can store things outside of the tent and still keep them dry, or even cook over a stove if it is really pouring out. The light tube is a bonus for diffusing my headlamp light when getting ready for bed, and the unique 3 bag storage system allows me to stow gear in multiple packs or multiple places in my own backpack. This is a great help when I have to make room in my pack for carrying equipment for a tired client on a long hike. Although I currently have 6 other tents to choose from, I find myself reaching for the Alto TR2 every time.

Originally posted on Sea to Summit
Michael S.
Rated 5.0 out of 5 stars

Great tent!

3 years ago

This is a great tent for anyone looking to cut pack weight and free up space. The compartmentalized stuff sack allows you to divide the tent up to utilize smaller spaces in your pack, freeing up more space in your main compartment. The tent poles and grommets are all color-coded, making the setup really easy. The unique shape of the footprint provides extra room inside for personal items that you want to keep with you over night. This is an all-around awesome tent, especially for those that are trying to achieve minimum possible pack weight.

Originally posted on Sea to Summit
Robert B.
Rated 4.0 out of 5 stars

Great tent.

4 years ago

Excellent design, packing in short bags nice for backpacking. Got lots of complements when backpacking in Yosemite this past month. Tent would be even better if poles could be shorter to match the length of the tent bag (similar to bikepacking pole length). Also a rectangle footprint for a bit more inside room would be worth the couple extra ounces. The light bar is a great idea but poor snaps to hold in place, fall off ceiling easily, Velcro would have been better. Finally, wish it was freestanding rather than semi-freestanding.

Originally posted on Sea to Summit
Suzy
Rated 3.0 out of 5 stars

Light but SMALL

2 years ago

I finally took this tent out on its first trip last weekend. Pros: it is very lightweight and packs down tiny, can be set up quickly (once you practice it, it is not the most intuitive tent I've set up), and reflectors on the rainfly make it easy to see at night. Cons: it is so small - my significant other and I both have regular-width sleeping pads (20") and they take up the entire tent floor. You would not be able to fit anything wider than that. I would only plan on using this as a 1 person tent unless you are very friendly with your tent partner. We could not fit any gear inside the tent which was a big drawback for us. Because the tent is so light, it also feels kind of flimsy. I'm hoping that durability won't be an issue going forward. I'm neutral on the light bar. It's an interesting idea and it does work but I wouldn't say that is a necessity by any means.

Originally posted on Sea to Summit
Michele
Rated 5.0 out of 5 stars

Well designed and comfortable.

1 year ago

I purchased the Alto TR1 after having a disastrous experience with the MSR Freelite 1. The Alto provides superior shoulder and headroom, with a well placed door. Its super easy to pitch, and the little triangular space that pops out on the otherwise rectangular floor space makes the tent feel roomier, and provides space for my dog or gear. The vestibule is large and the ventilation, overall, with the fly closed, is pretty good. I bikepacked in below freezing overnight temperatures, and there was a bit of condensation at the foot of the tent, and overhead - even with the peak vents open and the cover unzipped. However, somecondensation is always expected when there is ice on the outside of the fly. 🥶 I highly recommend this tent for anyone looking to lighten their load backpacking or bikepacking. The tubular storage pack strapped down nicely on top of my handlebar dry bag. Well done, S2S!

Originally posted on Sea to Summit
Karen K.
Rated 5.0 out of 5 stars

Ultralight protection from ALL of the elements

4 years ago

In my quest to lighten my pack I’ve experimented with several shelter options: lightweight freestanding one-person tent, hammock and tarp, UL tent set up w trekking poles. But I had yet to find a solution that was lightweight AND provided protection in a wide range of weather. I think I’ve finally found the answer. The Alto TR1Plus is semi freestanding, so one collapsible pole plus stakes give it structure and ample headroom. I love that I can set up the fly first to keep me dry as I set up the tent itself — and take down my tent under the fly (and keep it dry!) on wet mornings. Lots of configuration options provide ample ventilation, even with the thicker inner fabric of the Plus. (Which I expect will let me actually be — dare I say? — comfortable in winter weather!) I will be putting this tent through its paces in my upcoming thru-hike of the Vermont Long Trail, during this epically rainy summer. I expect it will keep me dry all night, even if I’m soaked all day.

Originally posted on Sea to Summit
Amos L.
Rated 5.0 out of 5 stars

A delightful one person tent.

3 years ago

A delightful one person tent. Perfect for backpacking. Definitely the most roomy one person tent I’ve been in. I really like the height as I am not fond of low profile tents. Set up is a little bit more detailed than some, but it will keep you and your gear dry. I love it!

Originally posted on Sea to Summit
Terence M.
Rated 5.0 out of 5 stars

Easy set up and absolutely

2 years ago

[This review was collected as part of a promotion.] Easy set up and absolutely bug proof. Camping in North Florida for three nights was a breeze. Totally dry in a couple of downpours. Very pleased with the experience.

Originally posted on Sea to Summit
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