Sperry Coil Saltwater Wedge Tide Duck Boots The last thing you need out in the wild is a heavy, fussy, uncomfortable pair of boots weighing you down! Luckily, Sperry's Coil Saltwater Wedge Tide Duck Boots feature a super-lightweight construction that allows you to wear them all day without fatigue. Simplicity is a key element of the Coils' design: an easy-on, easy-off back zip allows you to tie it once for fit and never tie it again. Superior memory foam cushioning feels great underfoot and allows you to focus on your adventure instead of aching feet. And honestly, they look great no matter where you wear them. Leather uppers/microfleece liner/rubber outsoles. Imported. Additional Features: Unique lacing system cinches boot tight around ankle in inclement weather Microfleece lining hugs the foot and keeps it warm Insulated EVA shellprovides added warmth Wedge outsole gives a little height without fatiguing the foot Vamp shell and outsole are completely waterproof