The Super lightweight and waterproof Winter Harbor infuses SON-R Technology into a versatile and sporty design. The enhanced stability, traction ad protection of the Winter Harbor offers great perfomance for the cooler weather. Features: Featuring Sperry WaterBlock, a breathable waterproof membrane that keeps feet dry and comfortable and 100gr insulation for warmth Son-R Technology, with its unique outsole/midsole design, provides natural sensory feedback for greater stability and agility on all terrains Adaptive Wave-Siping on the mini lug sole disperses water to reduce slippage Super lightweight EVA and rubber bottom provides lugged traction Removable full'length compression molded EVA footbed maximizes comfort Durable three-season boot features quilted uppers, micro-fleece lining and faux fur accents