FEATURES: SILICONE HEEL CUPÂ IS EXCELLENT SHOCK ABSORBER. REDISTRIBUTES THE PRESSURE CAUSED BY BODY WEIGHT ON THE FOOT. INDICATIONS: ONYXÂ SILICONE HEEL CUPÂ CORRECTS ALIGNMENT AND STABILIZE THE HEEL. SOFTER BLUE AREA INÂ HEEL CUSHIONÂ PROVIDES ADDITTIONAL RELIEF. DIRECTION FOR USEÂ SILICONE HEEL CUSHIONÂ CAN BE FIXED IN ANY TYPE OF SHOE (CASUAL, FORMAL OR SPORTS SHOE).MATERIAL:Â 100 % PURE PLATINUM CURED SILICONE.