Outdoors & Fitness · Head-to-head
Rab Ridge Raider Bivi vs Rab Storm Bivi
Which should you buy? Our verdict on both, pulled from our full The Best Bivy Sacks: 4 Compared (and One to Skip) comparison.
The Ridge Raider has the stated hoop, laminate shell and mesh door that make a bivy livable. The Storm Bivi gives up some breathability and the hoop for a lower spend.

Rab Ridge Raider Bivi
Buy itA hooped, freestanding single-skin bivi with a three-layer breathable shell and room to sit up.
- Rab states an overhead hoop at the head end plus a micro pole at the foot, so the fabric stays off your face.
- The 15D Pertex Shield Air shell is stated at 15,000 mm hydrostatic head and 20,000 g/m2/24h MVTR.
- A zipped entry with an internal mosquito mesh door, nine DAC V-stakes and three guy lines are included.
- At 890 g it weighs roughly double the Alpine Bivi.
- It packs to 32 x 15 cm, much bigger than a flat bivy.
- It is the most expensive way to avoid carrying a tent.

Rab Storm Bivi
Buy itA coated-nylon bivi with a stated spec sheet, sized for larger sleeping bags.
- The 40D nylon top is stated at 10,000 mm hydrostatic head with a tougher 70D nylon base also stated at 10,000 mm.
- Rab says the 3D construction is meant to fit larger sleeping bags.
- It packs to 25 x 12 cm at 547 g, and the maker names bikepacking, mountaineering and multi-day treks as uses.
- The shell is a coated fabric stated at 10,000 g/m2/24h MVTR, below the laminate bivis from the same brand.
- The maker page does not say whether it has a hoop or pole.
- It is heavier than the Alpine Bivi by roughly 100 g.
Side by side
| Rab Ridge Raider Bivi | Rab Storm Bivi | |
|---|---|---|
| Our verdict | Buy | Buy |
| Best for | Hikers and bikepackers who want rain protection and sitting room without carrying a tent. | Buyers who want a real waterproof bivy with published numbers and a lower spend than the laminate models. |
| Price tier | $$$ · premium | $$ · mid-range |
The bottom line
Our overall pick is the Rab Ridge Raider Bivi - A hooped, freestanding single-skin bivi with a three-layer breathable shell and room to sit up. Choose the Rab Storm Bivi instead if buyers who want a real waterproof bivy with published numbers and a lower spend than the laminate models.
Want the full picture, including the other options we compared and the popular one we'd skip? Read the complete The Best Bivy Sacks: 4 Compared (and One to Skip).