Fits Women's Size 5-7; Men's 4-5 1/2 * GelStep� orthotic insoles are made from 100% medical-grade silicone * Specifically designed to cushion protect absorb shock and relieve pressure on heels and metatarsal heads * 'Blue Zone' comfort spots feature softer Silicone for extra protection in high-impact areas * This dual-durometer design provides maximum comfort and cushioning * Antimicrobial top cover to help absorb perspiration reduce friction and improve comfort * Relieves heel pain supports arch protects metatarsal heads * Genuine dual durometer Silicone never flattens deforms degrades