Be prepared for any emergency situation in the mountains: the Ultralight Double Bivi from Mountain Equipment! The robust, UV-resistant outer fabric will give you reliable protection in windy and rainy conditions. Plus, the corners are reinforced, making the bivvy bag even more durable. On the interior, there is an aluminium coating that reflects 90% of your body heat.You can store the bivvy bag in the lightweight stuff sack when it's not needed. Thanks to the small pack size and low weight, the Mountain Equipment Ultralight Double Bivi is the ideal bivvy bag for adventures in the mountains!