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Survival Zone
In Stock Red £79.00
MSRP £90.00
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Last Updated: 13/04/2011
Glossary - Gore-Tex close

Gore-Tex is a unique tissue paper thin microporous membrane, which contains over 9 million pores per square inch. Each pore is 20,000 times smaller than a water droplet, yet some 700 times bigger than a moisture vapour molecule. This gives the fabric excellent levels of waterproofness and breathability.

The outer face of the Gore-Tex fabric is coated with a hydrophobic DWR (Durable Water Repellency) treatment which encourages surface water to bead up and run off. This improves the wet weather performance of the garment and promotes breathability by preventing wetting-out of the outer face.

The Rab Survival Zone Bivi Bag

The Survival Zone is a very light weight bivi made from waterproof seam-sealed Hyperlite Storm fabric to create a waterproof and breathable bag. It features a drawcord at the head allowing the hole to be closed around the face but still allowing ventilation. This is not the most durable bag but it's certainly among the lightest 'proper' bivy bags available, at around half the weight (and cost!) of a Gore-Tex bag it's an excellent choice for climbers.

  • Weight: 440g
  • Dimensions: 250 x 87 cm
  • Cut to take a mummy shaped sleeping bag
  • Waterproof breathable fabric
  • Long length allows sitting position
  • Low weight and pack size
  • Draw cord hood
  • Fabric: 70d Hyperlite Storm
Brand Model Weight Fabric Dimensions Breathability
Rab Survival Zone 370g Pertex Shield 253 x 87 cm RBR: 5
Rab Alpine Bivi 496g eVent 235 x 90 x 30 cm RBR: 9
Rab Ascent Bivi 611g eVent 235 x 80 x 30 cm RBR: 8
Rab Storm Bivi 664g Hyperlite Storm 235 x 80 x 20 cm n/a
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