Bring on the Rain...or Avalanche Horze Avalanche Rain Rug is a high-necked waterproof breathable rain sheet. The outer shell is 600D Ripstop polyester lined with thin polyester. The dart has created the perfect fit The gusset has also been moved forward to release pressure on the shoulders. The front closure features double snap hooks. The crossing surcingles have elastic ends and there are detachable leg straps. Machine washable at 104 F or 40 C. DO NOT tumble dry.