Rab Storm Bivi Bivy Bag, Chlorite Green, One Size

Rab Storm Bivi bivy bag in Chlorite Green

A lightweight Rab bivy bag with waterproof ripstop nylon fabrics, 10,000mm hydrostatic head and breathable construction.

The Rab Storm Bivi is a bivy bag built with waterproof ripstop nylon fabrics and a breathable construction. It uses a 40D ripstop nylon top with PU coating and a 70D nylon base with PU-coated back, both finished with fluorocarbon-free DWR.

For weather protection, the fabric spec is clearly stated as 10,000mm hydrostatic head, with MVTR 10,000 g/m2/24h for breathability. That makes the listing straightforward for anyone comparing bivy bags on fabric performance rather than extra features.

Key fabric details

• Top fabric is 40D ripstop nylon with PU coating at 108gsm
• Base fabric is 70D nylon with PU-coated back at 160gsm
• Fluorocarbon-free DWR is used on both fabrics
• Waterproof rating is listed as 10,000mm hydrostatic head
• Breathability is listed as MVTR 10,000 g/m2/24h

What to keep in mind

• This is sold as a bivy bag, so it suits buyers looking for a compact shelter layer rather than a full tent
• The listing focuses on fabric performance, not on extra accessories or add-ons
• Colour is Chlorite Green and the size is One Size