Bellows, closed-cell foam tongue keeps moisture and debris out Merrell M Select™ FIT.ECO+ blended EVA contoured footbed with added zonal arch and heel support Molded nylon arch shank Vibram® TC5+ sole 5mm lug depth Weight: 772G These hiking shoes from Merrell are ready to take on any terrain due to its TC5+ rubber compound feature which enhances grip and durability. The lattice-like overlay displays is built from performance suede, which supports and protects whilst the open-window venting allows for cooling breathability. Merrell air cushion in the heel absorbs shock and adds stability, important for those tricky paths or roads you may come across.