Equate Air Foam Insoles can be trimmed to fit your size and have a double layer of foam for greater durability. Equate Air Foam Insoles increase walking comfort and helps keep feet cool and dry. 3 Pairs. Unisex. Best suits women’s shoe size 5-10. & Men’s shoe size 7-13. DIRECTIONS: Insoles can be trimmed to fit your shoe size using the trim card provided. Replace insoles every three months, or more often if you are active.