The Muck Boot Excursion Pro Low Rubber Boot is versatile, comfortable, and built to perform! The durable, 100\\% waterproof rubber upper offers extended coverage for added protection against the elements. The 4mm CR flex-foam bootie is bolstered with four-way stretch nylon for lightweight flexibility. The XpressCool lining keeps feet cool in warmer weather, and is antimicrobial-treated to reduce odors so feet stay fresher longer. The etc sockliner helps reduce friction and heat buildup, while the EVA midsole adds just the right amount of cushioning underfoot. The new, lightweight EVA outsole is outfitted with rubber pods for optimal traction and support. Comfort range: Sub-freezing to 95° F. Medium width. Imported.