EquiFit Wither ShieldMeet WitherShield. Relieves pressure of blankets against the withers that may cause rubs Temperature sensitive T Foam inner conforms to the body for a custom fit, every time Breathable, SmartFabric outer is woven with real silver fibers for continuous germ fighting Antimicrobial & breathable SheepsWool = No animals harmed Use with a single blanket or layered Machine wash cold, lay flat to dry