Every day footwear ✓ Simply stretch and slip the heel protectors onto your feet, and you will feel perfectly comfortable wearing socks, shoes, sneakers, and boots. With breathable air holes on the side vents and it also massages your heel. Unisex for both men and women. Heel pain relief ✓ Help relieve severe heel pain and discomfort from your sore hurting heels, heel spur treatment, bone spurs, aching feet, aches, stress fractures, bruised, and sprained feet. They can even help with sharp extreme heel soreness and swollen ankles. Shock absorption ✓ A silicone heel protector provides compression protection for your plantar fasciitis, absorbs shock, and supports the heel for heel pain. It also helps to alleviate pain from Achilles tendonitis. Our heel cups soften the shock and impact on your sore feet - great for running, walking, or standing, heel protectors for doc martens boots. Heel protection ✓ Our heel protectors can comfortably be worn under socks or stockings with sneakers, shoes, boots, or heels in daily life for blister prevention. The most suitable heel protectors on market ✓ To fit everyone, S (90mm*95mm), M (95 mm*100 mm) and L (100mm*105mm) sizes are available. Heel protectors fit either left or right foot, both men or women, 2 pairs value pack.