PERFECT SPORTS SOCKS: Light up the field in these over the calf lightning bolt socks. Great for softball, baseball, soccer, field hockey, kickball, field hockey, lacrosse, basketball, volleyball, football, wrestling, cheer and more! Perfect for teams or just for fun! ACCURATE SIZING: MadSportsStuff Sock Size: Small - Youth Shoe Size 12-5, Medium - Womens Shoe Size 5-10 Mens Shoe Size 5-9, Large - Womens Shoe Size 10-13 Mens Shoe Size 9-12, X-Large Womens Shoe Size 13+ Mens Shoe Size 12+ PERFORMANCE MATERIALS: Fiber Contents: 77% Polypropylene, 17% Nylon, 3% Elastic , 3% Lycra Spandex PERFORMANCE FEATURES: Moisture Wicking, Arch and Ankle Compression to reduce fatigue, Blister Control, Lightweight, Double Welt Top, Heel/Toe Design, Advanced Yarns Help Control Odor QUALITY CONSTRUCTION: Made with love in the USA MadSportsStuff Crazy Socks with Lightning Bolts. High performance athletic socks for all team sports and elite athletes. Great for boys or girls, teams and gifts.