Completely waterproof and breathable, the Muck Boot Derwent II Waterproof Boots can handle woodland trails with ease. A neoprene lining adds a thin layer of flexible insulation for additional comfort. Constructed with a mesh lining, the Derwent II Waterproof Boots have maximum moisture wicking ability, for a cooler feel.Fully waterproofBreathable - with PK mesh lining4mm neoprene liningDurable outsoleReinforced toe and ankle - added supportMid-height with pull tabApprox. boot height: 35cmApprox. max calf circumference: 43cmMaterials: rubber / neoprene / PK mesh