Merrell West Rim Sport GTX Women's Trekking Boot with Removable Kinetic Fit™ Base Molded Insole The Merrell West Rim Sport GTX Women's Trekking Boot is a very durable shoe equipped with a breathable mesh that offers you the best possible combination of comfort and safety even during the most demanding hikes. The GORE-TEX® membrane guarantees exceptional breathability and water resistance. The shoe has reinforced toe protection and a breathable mesh lining. The Kinetic Fit™ Base is a removable molded insole, designed like the foot, with flexible support for a natural footstep, helping to prevent fatigue. . In addition, the EVA midsole made of light foam offers stability, comfort and a durable Merrell rubber sole for a reliable grip on varied terrain.