The Buzz Off Fly Boot (set of 4) is a very durable, lightweight, breathable 1000D poly/vinyl material which offers 70% UV protection from the sun. These sturdy yet flexible fly boots offer maximum protection from bugs while keeping your horse comfortable. They are designed in a cone-like shape to allow your horse to move freely while in the pasture. The improved design features boning to ensure that the boot does not slouch ensuring a more secure fit. Use all summer for lower leg fly protection, in the stall, or turned out. These boot can be used as an ice boot as well.