Feature: Soft and comfortable Energy shock absorption Suitable for all types of shoes Cuttable silicone insoles Orthotic Ventilation Arch support Antibacterial Non-slip Memory foam insole Plantar fasciitis Instruction: Remove the existing insole from the shoe.Insert the insole into the shoe and measure according to size.(Tip: You can use the original insole inside your shoe as a reference size).First cut the toes of the insole, then the sides so that they are most comfortable for your foot and shoe.