New Balance Socks Size Chart Designed to go from the gym to the street, these lifestyle socks deliver versatile performance and colorful style. Features like breathable mesh venting, y-heel pocket fit and stability fit arch support paired with bright and basic colors provide the perfect combination of performance and pop. Features: - Stability Fit enhanced arch support for a snug fit. - Flat Knit design for lightweight comfort. - Reinforced heel and toe for maximum durability. - NB FRESH antimicrobial properties resist odors. - Moisture management to keep feet dry and cool. - 35% polyester, 34% cotton, 27% nylon, 3% spandex, 1% other fiber