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. Robust and abrasion resistant 75D polyester shell fabric with extrusion laminated TPU. Flip-over multi-function valve for fine-tuning air pressure, fast inflation and easy deflation. PillowLock system prevents your Sea to Summit Aeros Pillow from slipping. Includes a repair kit for easy puncture repair in the field.