Material:Silicone Color: As Picture Size: Red,Transparent and Blue Size:21 (L) x 6.8 (W) x 1 cm (H)/8.26"" x 2.7"" x 0.39''(Product is stretchable, you can adjust it to fit your feet) The other color are both free size! Features: 1. Silicone material design, soft, breathable, really rebound deformation, lightweight soft silicone material, more comfortable than half insole. 2. Seventh design, appearance, different from traditional insole, just in front of the foot position, less than the toes, so do not squeeze the toes shoes. 3. Massage, decompression shock, reduce foot fatigue, mainly used in the high-heeled shoes, high-heeled shoes, high-heeled boots, high-heeled dress shoes and boots and other types of high-heeled shoes, are often in outdoor sports, love shopping and walking people essential goods. 4.The space can also be adjusted within the shoe, make your shoes more fit, often wear high heels lady standing and walking with better results. 5. Powerful massage, protect your health! 6. Firmly glued in the shoes, both to maintain good shape, it will not damage the shoes. 7. Suitable high-heeled shoes, high-heeled sandals, high-heeled slippers, high-heeled dress shoes and boots and other shoes. Notice: 1. It is manual measurement, there may be 2-3cm error. 2. And item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. hope understanding. Package included: 1 Pair Shoes Insole"