Have all the luxuries you enjoy at home while you're staying in the great outdoors. The Sea to Summit Foam Core Pillow has a stretch knit fabric which is amazingly soft to the touch, but polyester fill material is breathable, so you won't be too warm. And for all you recylcing lovers, inner pillow foam is made from up-cycled Sea to Summit Self Inflating Mats, allowing you to rest easy in more ways than one.