Features of the Mountainsmith K-9 Bed Breathable mesh stuff sack included Ideal size and weight for travel, camping, backpacking Sized for medium and large dogs Elongated hexagon shape creates ideal pad to curl up on Brushed twill top layer Abrasion resistant bottom Highly compressible synthetic Insulation Fits in K-9 cube and K-9 packs (MD / LG) Machine washable Fabric Details 75D x 242T Poly brushed twill 210D Poly oxford Poly synthetic Insulation