Mio medium turnout pony rug the mio medium turnout is a fantastic value rug which includes a 600 denier outer and a warm 200gm filling it also has a polyester lining for added comfort for the horse and is waterproof and breathable features of this rug include cross surcingles tail flap surcingle tape chest fastenings and the classic cut patented front leg arches for extra freedom of movement turnout rug 600 denier outer 200gm filling polyester lining waterproof and breat