The Camp Plus Self Inflating Sleeping Mat from Sea to Summit is designed to provide maximum comfort for those seeking a versatile all-around sleeping mat. It features robust and durable 75D fabric combined with unique Delta Cores technology, allowing for a reduction of about 40 percent in foam, resulting in a compact sleeping mat. Equipped with horizontal Delta Cores, this sleeping mat offers high durability and comfort. The use of 75D polyester ensures a firmer, more abrasion-resistant surface, while the Camp Plus S.I. provides sufficient cushioning with a thickness of 7.5 centimeters, even for lanky hips. The high R-value of 4.3 also means that you can use the Camp Plus Self Inflating mat year-round.