inside this four-way stretch sneaker from aetrex is the lynco® removable insole, one of the top orthotic systems on the market. wear it for exceptional comfort, support and proper body alignment with cushioning at the forefoot, arch and heel. remove the insole to accommodate your own orthotics. the four-way stretch fabric upper feels great with soft microfiber lining. aegis® antimicrobial technology helps protect feet from bacteria and odor. durable traction rubber outsole. orthotic-friendly.