SKU: SS24583 Weighs: 522g (ex bag) Mat Size: Regular R-Value: 5.6 Season Rating: Winter Mat Type: Airbeds The Flextail R05 Zero Mummy Sleeping Mat offers comfort, insulation, and portability at an attractive price. Its R-value of 5.6 makes it a four-season solution, and its 3.9-inch thickness rivals home mattresses. Despite … R05 Zero Mummy Sleeping Mat