The insole surface fiber weaves the ventilating net, the forefoot has many ventilation holes, absorbs the sweat and deodorizes, increases the ventilating ability. The height of the increased insole can be adjusted. Applicable to high top shoes: high top canvas shoes, leather shoes, boots, etc. Note: not suitable for low top shoes. The heel cushion design of the insole can effectively absorb the impact, and the arch part is raised to provide a little support. There is a size line on the back of the insole. Customers can cut the insole with their own at will. It is 100% suitable for your shoes. It is suitable for Women US (5.5-10), Men US (4.5-9).