Hilleberg Enan vs Sea to Summit Alto TR1
Two shelters, measured against each other on the figures that decide whether they work on a bike.
The short answer
The Sea to Summit Alto TR1 is ahead on pitching on hard ground, floor space, headroom and price. Nothing published here goes the other way.
Assembled from the differences below rather than written over them. Every figure is a published measurement or computed from one — nobody here has used either one.
Where they differ
4 of the 7 things we can measure come out differently.
Pitching
Alto TR1 needs less from the groundFreestanding matters on a bike trip more than on a hike: gravel bars, wooden platforms and hardpack are where you end up when you are following a road, and none of them take a stake.
Floor area
0.25m² more floor in the Alto TR1Inner length by inner width as published. On a bike trip the floor also has to take whatever you brought inside off the bike, so a few centimetres is not nothing.
Peak height
15cm more headroom in the Alto TR1Whether you can sit up, which decides how a rained-out afternoon goes.
Price
$410 between themAs we hold it. Shelter prices move more than most gear, so check before you commit.
Side by side
Including the rows where they are level.
| Hilleberg Enan | Sea to Summit Alto TR1 | |
|---|---|---|
| Folded pole length | 450mm — too long for drop bars | 450mm — too long for drop bars |
| Pole figure source | Maker's own pole figure | Packed bag length, used as a proxy |
| Minimum weight | 960g | 936g |
| Pitching | Needs stakes | semi |
| Floor area | 215 × 95cm — 2.04m² | 215 × 107cm — 2.29m² |
| Peak height | 93cm | 108cm |
| Price | $790 | $380 |