The Hilly Marathon Fresh Crew Socks are perfect for all running distances, from a 5k to a marathon. They are designed with breathable, lightweight material and minimum-level cushioning in key areas to provide exceptional comfort. The socks feature an antimicrobial treatment to keep your feet fresh and odor-free, and Lycra Sport fibers ensure a comfortable, lasting fit. Additionally, the flat toe seam reduces irritation and slippage. Features: Minimum-Level Cushioning - For cushioning in places you most need. Polygiene StayFresh Finish - Prevents the growth of odour-causing bacteria. Y-Heel - Improves the fit and reduces slippage. Vented Upper - Allows cool air to circulate. Anatomical Cushioning - Located in key area enhances comfort. LYCRA Sport Fibres - Ensure lasting comfort, fit, shape and performance. Flat Toe Seam - Further reduces irritation and slippage.