CARBON AIR BELL BOOTSThe CARBON AIR over the knee boots, developed to protect the sport horse in all types of disciplines, are designed to defend the horses belly from possible impacts and or rubbing. The CARBON AIR over the knee boots, developed to protect the sport horse in all types of disciplines, are designed to defend the horses belly from possible impacts and or rubbing. 40% polyurethane 30% neoprene 10% polyester 10% composite fiber 7% PVC 3% elastane Recommended