SPERRY TOPSIDER. STS82664. MARITIME REPEL BOOT WITH THINSULATE. TAN AND NAVY.True prep s never too presh it s at home when lounging or lunching but also ready for anything the weather weekend may hold. That s what we had in mind when we gave our classic duck boot a spin delivering all-day style that braves commutes and country clubs alike.200G Thinsulate cotton twill lining keeps toes toasty when the elements strike.