SKU: SS23626 Weighs: 1404g Mat Size: Double R-Value: 4.8 Season Rating: Winter Mat Type: Airbeds The Dura 5R is a seriously warm 2 person mat that can be used in the depths of winter. Exped says:  The Exped Dura 5R Duo M Sleeping Mat is a SUPER DURABLE EXPEDITION MAT Durable, extra-warm mats for demanding adven… Dura 5R Duo M Sleeping Mat