Fits 2 x 25in sleeping pads; Sustainable Comfort: Super-soft, 100% recycled brushed microfiber polyester is kind to your skin and the Earth; machine washable for hassle-free care; Improve Your Sleep System: Ideal for Therm-a-Rest quilt and blanket-based sleep systems, with perimeter loops for easy attachment; Extend the Life of Your Pad: Keeps your pad free of dirt and body oils, prolonging its lifespan; Flexible Sizing & Fit: Fits both rectangular and tapered mattresses; Coupler size mates two pads together; Middle pieces are torn off (accounted for in pricing; could be sewn back on).