Petrel 1 Bivvy Bag
Unisex
Rated 4.4 out of 5 4.4 (112)
£149 £134 for Club members
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A 390g breathable bivvy bag for summit nights and emergency cover.
Free click and collect from all 128 shops, usually the next day.
- Free delivery on orders over £50, next day for £6.95.
- 60 days to return anything unused.
- Water-repellent finish made without PFAS.
About this product
The Petrel 1 goes over your sleeping bag and mat and keeps off the dew and drizzle. It is a three-layer fabric that lets moisture out, so your down bag stays drier than it would under a plastic survival bag.
A side zip runs a third of the way down, and the hood has a drawcord and a mesh panel for when the midges are out. We use them on summer nights on the Glyderau, when a tent feels like more than you need.
- Three-layer fabric rated to 20,000mm
- Side zip with a storm flap
- Mesh panel in the hood for midge nights
- Room for a sleeping mat inside the bag
- Outer fabric has a PFAS-free water repellent
Specification
| Berth | 1 |
|---|---|
| Packed weight | 390g |
| Packed size | 18 x 12cm |
| Pitched size | 220 x 80cm |
| Fabric | Fleetfly 3L nylon, polyurethane membrane |
| Waterproof rating | 20,000mm |
| Breathability | 15,000g/m²/24h |
| Product code | TS1022 |
Materials
Upper 100% nylon face with a polyurethane membrane and a polyester backer. Base 100% nylon with a polyurethane coating.
Care
Turn inside out to dry after use. Hand wash in cool water with a technical cleaner if it gets grubby.
Reviews
4.4 out of 5
112 reviews
Reviews on this demo are invented, like everything else here.
4 out of 5
Good, tight with a fat mat
My 7cm air mat only just fits inside with the bag. With a thinner mat it would be roomy. Breathes better than my old one.
Jack, Llanberis · 3 July 2026 · Used with a regular-width mat
5 out of 5
Night on Ben Wyvis
Slept out on the summit in June with a light down bag inside this. A bit of damp at the foot by morning, otherwise dry. Packs to nothing.
Iona, Inverness · 23 June 2025
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