The Rab Alpine bivi is a minimalist, single-person waterproof bivi, designed for use on light-weight alpine expeditions and summit attempts. Made using a durable and breathable eVent® DVStorm 3L fabric, this Alpine Bivi Bag will appeal to those who are looking for maximum performance with slightly larger capacity but balanced with a smaller pack size. Made with eVent® DVStorm 3L waterproof fabric with durable a 70 denier nylon base. The additional 10cm width will be of interest to those with a broader chest, or with winter sleeping bags who want maximum loft yet still achieving the result of a very small packed size of 10cm x 30cm. A superb 'lightweight' bivi bag and as the name suggests ideal for Alpine trips.