Waterproof performance shoe ideal for all weather walking the merrell womens grassbow sport gore tex trail shoe combines moulded tpu external heel support with an under heel air cushion to absorb shocks and improve comfortdesigning performance footwear is what the experts at merrell are good at and their womens grassbow sport gore tex trail shoe comes as a great addition to their outstanding selection of trail shoes it features a gore tex extended comfort lining which is waterproof and brea