Breathable & UV-Protection: Breathable and ventilated mesh with no sense of restraint when being worn. Provides reliable protection from harsh UV-rays at the same time. Stomp-Reducing: Dense PVC fabric forms a sturdy shield for your horse from summer nuisances, which further greatly reduces annoying stomp. Perfect for use in a pasture setting. Sturdy Support : Sewn-in nylon stays ensure this fly boot to stay upright and not likely to sag. Will not be bent easily during use nor easy to deform. Extra tough air mesh also increases the durability greatly. Four Touch Fasteners: This fly boot with FOUR sturdy touch fasteners to be held better and also much more easier for putting on and taking off. Making Your Horse Amazing: We broaden your color choices to NINE and Now 4 in one pack is also available! Please allow slight difference in dimensions due to manual measurements.