New Balance Socks Size Chart The New Balance Performance series features excellent moisture wicking yarn, seamless toe, breathable mesh, a lightweight design, and arch support. Mesh details provide excellent airflow and breathability to keep your feet dry and comfortable. It's made from soft polyester and spandex blended fabric. Features: - NB DRY moisture wicking fabric releases sweat away from the fabric and is fast drying, so you stay comfortable during athletic activities and you don't have to worry about changing your socks in mid-workout - NB FRESH antimicrobial treatment in the sock yarn resists the toughest odors that are all to common in the territory of the athletes who are always pushing themselves to meet the next challenge - Mesh channels in the fabric allow optimal air flow and breathable comfort so your feet stay dry and comfortable in the hottest athletic environments - The seamless toe design ensures the socks mold comfortably to the contours of your feet while reducing blister-causing friction for a smooth, streamline, performance fit - Extra yarn has been added in the heel for additional reinforcement and protection and greater durability so you can outperform the competition - A soft, flat-knit construction gives these socks a smooth, lightweight feel for less bulk inside your favorite casual or athletic footwear - Stability Fit engineered arch support is designed with increased elastic in the arch area to minimize sock movement on the foot so you get a snug, secure fit and still maintain full range of motion during athletic pursuits - 97% Polyester, 3% Spandex