SKU: SS22856 Weighs: 587g R-Value: 4.8 Season Rating: Winter Mat Size: Regular Mat Type: Airbeds If you definitely need a full 4 season mat but you want one that's a bit wider than the standard mat (and you can't stand those Mummy ones) then at just 587grams this is a good lightweight option. Exped's Ultra 5R Sleepi… Ultra 5R M Sleeping Mat