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Images: Mountain Warehouse and its retailers. Used for product identification.

Mountain Warehouse

Mountain Warehouse Waterproof Bivvy Bag

The £25 way to try bivvying before you commit to a serious bag.

Weight
340 g
Waterproof
3,000 mmBreathable fabric
Packed
≈ 25 × 10 cm measured

Best price found

£24.99

at Mountain Warehouse · In stock · RRP £39.99 · Direct from maker

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Prices checked 31 October 2026. We may earn a commission on these links.

  • Waterproof
  • Breathable
  • Taped seams

Specifications

Weight
340 g (LFTO measured 363 g with stuff sack)
Packed size
≈ 25 × 10 cm measured
Fabric
100% polyester ripstop with waterproof coating
Hydrostatic head
3,000 mm
Open size
225 × 75 cm
Entry
Top entry, no zip
Breathable
Breathable fabric
Manufacturer page →

Pros & cons

  • Very affordable, the cheapest reusable bivvy from a mainstream UK retailer
  • Ultralight and very packable
  • Taped seams and an adjustable drawcord hood; simple no-frills design
  • Much lower waterproof rating than most rivals and low breathability
  • Build quality feels a little cheap; not particularly durable; best kept to drier spring/summer nights

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