Spun from quick-drying, odor resistant hydrophobic yarns, these are the ultimate tools for hardworking feet exploring cool summer flows or salt flats. Right Angle® arch support enhances ride across variable underwater terrain, while bolstered cushioning and an anti-abrasion build pampers feet. Mid-calf height. 75% polypropylene/20% nylon/3% polyester/2% LYCRA. SIZES: Medium(8-10), Large (10-12), X-Large(12+).