Our super thick Camp Plus Self-Inflating Mat with horizontal Delta Cores delivers plus-sized comfort and warmth for year-round camping. Horizontal Delta coring is a technology pioneered by Sea to Summit. The process removes over 40% of the foam to reduce weight and bulk but does not compromise comfort and durability. FEATURES 4.3 R-Value is warm enough for all but the coldest ground. Plus-size shape and three inch thickness provides ultimate comfort. Delta Coring removes over 40% of the foam to reduce weight and bulk, without compromising durability. Best Use:Camping Weight:1lb 15oz | 880g- Regular Performance:4 Season Packed Size:8 x 10.2in | 20.4 x 26cm Weight:2lbs 10oz | 1185g- Large Performance:4 Season Packed Size:8.5 x 13in | 21.6 x 33cm