Sperry Women's Saltwater Buffalo Check Duck Boot size 8.5 Water’s no match for our best-selling Saltwater Duck Boot. This all-season style features a plaid, wool shaft, barrel laces, and the signature rubber "duck" shell. Plus, a rubber outsole with molded Wave-Siping™ technology enhances traction. Plaid wool shaft Rubber duck shell provides added protection Signature Sperry Barrel-Tied Lacing for a secure fit Rust-proof eyelets Zipper entry for easy on/easy off versatility Non-marking rubber outsole with Sperry’s Signature molded Wave-Siping™ technology for enhanced traction