Cow suede and mesh uppers, for breathability and comfort. TPU waterproof shell. Lace up closure for a customized fit. M-Select DRY, waterproof construction, provides water protection, and wicks away moisture, will keep your feet dry. 400g M-Select lining will keep your feet warm. M-Select FRESH for odor control. Removable EVA footbed, provides support and cushioning. M-Select GRIP outsole is durable, shock absorbent, and slip resistant.