The WeatherBeeta Reflective Exercise Sheet is made from a durable 300 Denier outer with a 210T polyester lining. Featuring waterproof and breathable qualities, it is ideal for year round use.Featuring a 100% Boa fleece wither relief pad for increased comfort, reflective binding for additional visibility, girth straps, a tail flap, and a fillet string. WeatherBeeta 300D Reflective Exercise Sheet - Yellow