GelStep® heel cups are made from 100% medical-grade silicone. Specifically designed to absorb shock, relieve pressure and cushion heels to ease pain. 'Blue Zone' Comfort Spots feature softer Silicone for extra protection in high-impact areas. This dual-durometer design provides maximum comfort and cushioning. These cups have an odor-control, anti-microbial top cover to help absorb perspiration, reduce friction and improve comfort. Relieves heel pain, reduces shock to skeletal systemGenuine medical-grade Silicone never flattens, deforms or degradesDual durometer cushioning with softer 'Blue Zone' provides extra shock absorptionMedium density firmness absorbs impact efficiently, recovers quicklyAnti-microbial top cover reduces friction, absorbs odor, prevents bacterial growth Silicone Heel Cups absorb shock, relieve pressure and cushion heels to ease pain. 'Blue Zone' Comfort Spots provide softer Silicone for extra protection under high-sensitivity areas. DIRECTIONS Place Cup flat side down, snugly against the heel of the shoe. CARE Hand wash. Air dry completely. WARNINGS Increase wearing time gradually. Do not place product on an open wound. If irritation or discomfort worsens, discontinue use. Sizing: By Shoe Size Size Item# Women's Men's Small Covered 5050 4-7 Medium Covered 5051 7 1/2-10 6-8 1/2 Large Covered 5052 10 1/2-12 9-11 1/2 X-Large Covered 5056 12+ 12-14 1/2 XX-Large Covered 5057 15+ Trial !