Simms Flyweight Wet Wading Shoe shaves excess ounces in exchange for pace-setting comfort and hard-charging traction in pushy water and across slick, unforgiving terrain. Go lighter, go farther. A lightweight, hiking-inspired, wet wading shoe for moving fast on warm days. Designed to be worn next to skin or with a thin knit sock. SPECS: Vibram sole for great grip Low-profile, lightweight synthetic boot upper Welded TPU film in high abrasion zones for added durability Web lacing system for lightweight comfort Comfortable, high-cushion midsole Stud Compatibility: HardBite Studs for Rubber Soles only (Item Number: AU-HBV1). In good used condition--my husband wears between a 12 and a 13 and these were a bit snug so they don't have a lot of use on them. Comes from a smoke free and pet free home. Great for fly fishing, beach fishing, creeks, rivers, or anything in between.