terrex2adidas Outdoor Terrex Fastshell Mid- The adidas Outdoor Terrex Fastshell Mid meets all your hiking needs. The adidas Outdoor Terrex Fastshell Mid features a continental rubber sole for superior grip, toggle-lace closures and a hook and loop strap anchors the fit. Adiprene support provides cushion, while Primaloft Gold is insulated to keep water out and durable. Continue reading to see images of the adidas Outdoor Terrex Fastshell Mid available at BX Sports. terraxterrex4