Wolverine Durashock Insoles Shirts Adjustable back lace up allows

Adjustable back lace up allows you to customize your shaft circumference from 13 1/2 to 16 1/2 inches

6 inch shaft

Removable MemoryTech footbed

and two adjustable microfiber straps at the forefoot and heel

Bungee lacing for a secure fit

Wolverine Durashock Insoles Shirts Adjustable back lace up allowsYou never have to give up your favorite boots just because the footbed has worn down again with the Durashocks replacement Insoles Countered footbed with flexible polyurethane foam Space Age technology for comfort and shock absorption Cushioning in critical heel strike area for shock absorption Designed as replacement footbeds for Wolverine DuraShocks footwear only Sweat wicking fabric