Premium non-marking natural-rubber outsole infused with long-lasting Sulfadex rubber conditioner.100% Waterproof! Self-cleaning tread design resists build-up of mud, dirt, grit and gravelExceptional traction and performance on a variety of indoor/outdoor surfacesFive-layer chemical-resistant vulcanized outer shell with reinforced toe, instep, heel pocket and perimeter foxingFully seam-sealed neoprene bootie construction with oil-resistant/slip-resistant rubber formulaRigid heel kick for easy on/off convenienceWIXIT Cool-Clad wicking airmesh lining with added micro-dot perforations. Wicks away moisture and allows the air to flow more than traditional airmesh. Keeps the foot cooler in warmer temperaturesSteel shank for added arch supportAdjustable Gusset Style – customize to fit larger calves for optimum comfort and protection with Dryshod's expandable gusset and adjustable locking strap. Extra room also accommodates layers of clothing being tucked into the boot. Dryshod Mudslinger FLX Gusset Brown Boots MSXG-MH-MBR-M