Professional's Choice Pro Performance Memory Foam Open Front Show Jumping Boots feature a ventilated dual hardness outer shell which is designed to dissipate energy when the strike area is hit. The shock absorbing air cushion fits in an anatomically shaped strike area, reducing the force of impact and then returning to its original shape. The memory foam lining is made of a compressional open cell foam; creating an even closer fit to your horses leg. Prevent less rubbing and provide complete protection with the dual hardness outer shell and memory foam lining. Perfect for both schooling and the show ring. One size fits most. Sold in Pairs. These are rear boots. Available sepearately in front boot pairs.