The Dura 5R Duo is our warmest, most durable backpacking mat option for sleeping two people. Made for demanding adventures, including extended outings in alpine and polar regions, rugged paddling trips, and overlanding. EXPED's SYNMAT TECHNOLOGY, with our proprietary Texpedloft insulation, ensures maximum warmth over the lifetime of the mat, while a 7 cm thick air cushion cradles the body. These air chambers run head to toe, fully supporting the body for an unrivaled night's sleep and giving maximum durability.