The IsoCool Cross The Line Trainer Socks are ideal for active use. Lightweight and breathable, with quick wicking properties that actively wick away sweat - helping your feet stay cool and fresh all day long. IsoCool - Our IsoCool fabric is quick drying, highly breathable and wicks away perspiration from the body to keep you cool Breathable - The fabric allows perspiration to pass out of the garment, keeping you cool and comfortable Lightweight - Great for travelling, comfortable to wear and easy to pack Easy Care - This garment is machine washable (Ref: 026102)