SKU: SS22862 Weighs: 865g R-Value: 7.1 Season Rating: Winter Mat Size: Long Wide Mat Type: Airbeds If you are looking for an 'extreme cold' mat in an oversized rectangular format then this mat delivers huge comfort and insulative performance at a reasonable weight of 865grams. Exped says: The Exped Ultra 7R LW is an u… Ultra 7R LW Sleeping Mat