SKU: SS22857 Weighs: 694g R-Value: 4.8 Season Rating: Winter Mat Size: Long Wide Mat Type: Airbeds If you definitely need a full 4 season mat but you want one that's a bit longer & wider than the standard mat (and you can't stand those Mummy ones) then at just 700grams this could be the mat for you. Exped's Ultra … Ultra 5R LW Sleeping Mat