Height: 2cm, 3cm, 4cm, 5cm If measuring, please place it on a flat place to measure its height, the error is ±0.3cm Length: 27cm.(Free tailoring) Ultra light, the overall lighess without pressure and enhance stability. Super elasticity and shock absorbent for all day comfort. Shock absorbing heel and forefoot padding. Invisible height increase and instant taller. Stoma design allows better air circulation inside your shoes. Shock-absorbing design protect your foot and ankle. Comfortable design reduces foot pressure for heel, suit for standing a long time. Full-size design provide better support and make your feet more comfortable. Reduces pressure on foot when walking or engaging in physical activity. Magnetic massage for the feet can promote blood circulation. Reduce muscle pain and pain, relieve stress. Prevent aging, strengthen health and resist ill. Fit many kinds of shoes, unisex, fit most of sizes.