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Images: Rab and its retailers. Used for product identification.

Rab

Rab Storm Bivi

A 547 g zipped bivi with a 10,000 mm head and 10,000 g/m² breathability, cut for bulky bags.

Weight
547 g
Waterproof
10,000 mmBreathable top, MVTR 10,000 g/m²/24h
Packed
25 × 12 cm

Best price found

£108.95

at Cotswold Outdoor · In stock, some sizes sold out · RRP £145.00 · Low in stock

View Deal
  • HardloopIn stock · RRP £144.90 · Chlorite Green£120.59View Deal
  • RabOut of stock at check · Direct from maker£145View Deal

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

  • Waterproof
  • Breathable
  • Zip
  • Mesh vent
  • 10k+ mm HH

Specifications

Weight
547 g (One size, 230 cm long)
Packed size
25 × 12 cm
Fabric
40D ripstop nylon top and 70D nylon base, both PU coated, PFC-free DWR
Hydrostatic head
10,000 mm
Open size
230 × 80 cm (length × shoulder width)
Entry
Zipped entry with mesh vent panel
Breathable
Breathable top, MVTR 10,000 g/m²/24h
Manufacturer page →

Pros & cons

  • Maker-rated 10,000 mm head and 10,000 g/m² MVTR on a 547 g bag
  • Three-dimensional cut leaves room for a larger sleeping bag (Rab)
  • Zipped entry with a mesh vent panel lets you close up and still vent
  • No hoop or pole, so the fabric sits close to your face when zipped
  • Stock is patchy: Rab's own store and several retailers were sold out in October 2026

Sources for this product

  1. 1Rab Storm Bivi product page
  2. 2Cotswold Outdoor listing
  3. 3Hardloop listing

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