We made these mats to provide you with insulation and comfort on uneven or rough surfaces. Polyester plus PVC fabric provides all season usage. The high flow valve allows for quick inflation/deflation. The mats come with cord-lock drawstring stuff/storage sack. High quality open foam core offers exceptional comfort and yet rolls up compact. Get a good night's sleep while camping or at home. The high quality 72" x 20" x 1" open foam core offers exceptional comfort and yet rolls up compact. Get a good night's sleep while camping or at home. Comes with cord-lock drawstring stuff/storage sack. Rolled measures 20" x 6" Dia.