The Bucas Buzz Off Riding Rug protects against fly, insect and UV as they are made from a specially developed light weight fine mesh fabric. This mesh blocks even the smallest of insects and reduce the effects of ultraviolet radiation. The rug comes in two parts the first part being a quarter sheet and the second being neck and shoulder cover. So as to help you figure out what size your horse might possibly be the following should be of help to you and your horse! Small – 125 cm / 5’6 / 66″ Medium – 135 cm / 6’0 / 72″ Large – 145 cm / 6’6 / 78″ Xlarge – 155 cm / 6’9 / 81″ If your horse measures in between these sizes you might be better  getting the smaller size as the larger size might move around more or end up pulling the rug backwards. Bucas Buzz Off Riding Rug