The Saltwater duck boot by Sperry is crafted with a waterproof rubber toe to keep you dry, a durable Wave-Siping™ sole to improve traction, and an ultra-warm microfleece lining. FEATURES Waterproof rubber shell & wool upper Inside zipper closure Lace-up closure Round duck toe Padded tongue Microfleece fabric lining Removable padded insole Approx. 6" shaft height Approx. 8" calf circumference 0.75" heel Wave-Siping™ non-marking rubber sole Item # 561116 UPC # 195017170775 Don't let a dreary weather forecast prevent you from enjoying the great outdoors!