Material:Soft Gel and Flannel。Recommended size: EU size 35-40，EU size 40-45Height increase: 3 / 5 CMFree to cut2-layer detachable design: you can adjust the height by attaching or detaching the removable insert, allowing you to increase your height freely.Soft springy and comfortable silicone insoles with good damping effect, helping to relieve your foot pain and when walking and suitable for standing a long time.Invisible design makes nobody notice you wearing them.Comfortable anti-slipping foot soles,fit most shoes-boot, sneaker, and trainer etc。Package Include: 2 Pair Half Size InsoleNotes:The color of the item may be slightly different from the picture due to the difference in light and screen.Please allow a difference of 0.5-2 cm due to manual measurement.We guarantee the style is the same as shown in the pictures, but not the same performance on different bodies as on the model. Thank you!Reduce friction to improve overall foot comfort.