Quick Summary
The Rab Storm Bivi is a 1-person bivi shelter in Ascent Red. It is a waterproof, breathable bivi with a zipped entry and 3D construction, designed for rough weather use in mountaineering, backpacking and bikepacking.
Key stated figures include HH 10,000 mm and MVTR 10,000 g/m2/24hrs, along with a length of 230 cm, shoulder width of 80 cm, packed size of 25 x 12 cm and weight of 547 g.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Product type | 1-person bivi shelter for overnight use. |
| Colour | Ascent Red. |
| Entry | Zipped main entry with breathable mesh panel for venting. |
| Construction | 3D construction for a roomier sleeping shape. |
| Length | 230 cm, which matters for full-length sleeping space. |
| Shoulder width | 80 cm, which affects how much room there is around the sleeping bag. |
| Packed size | 25 x 12 cm for pack planning. |
| Weight | 547 g, relevant when pack weight matters. |
| Top fabric | 40D ripstop polyamide with PU coating and fluorocarbon-free DWR. |
| Base fabric | 70D polyamide with PU coating. |
| Water protection | HH 10,000 mm on the top and base. |
| Breathability | MVTR 10,000 g/m2/24hrs on the top. |
What to Compare Before Buying
- Space: The stated 230 cm length and 80 cm shoulder width define the sleeping area. Compare those figures with your sleeping bag and the space you want around it.
- Weather protection: HH 10,000 mm is listed for the top and base, so check whether that level suits the conditions you expect.
- Breathability: The top is listed at MVTR 10,000 g/m2/24hrs. Compare that figure if condensation management matters to you.
- Pack size: Packed dimensions are 25 x 12 cm, which helps when planning storage in a pack or pannier.
- Weight: At 547 g, it is worth comparing against other bivi shelters if you are trying to keep carried weight down.
Who This Product May Suit
This bivi may suit solo users who want a lightweight shelter with a zipped entry and the stated 3D shape. It is relevant for people planning mountaineering, backpacking or bikepacking trips where packed size and carry weight matter.
Choosing the Correct Version
Check that you want the 1-person version in Ascent Red before choosing an offer. The stated dimensions, packed size and weight are part of the decision, especially if you are matching the shelter to a specific pack or sleeping setup.
Before You Decide
Confirm the 1-person format, the 230 cm by 80 cm size, and the 25 x 12 cm packed size before choosing. If pack weight matters, compare the stated 547 g against other options. If you are choosing for rough-weather trips, also check that the listed protection figures match your needs.






