1000 Mile Fusion Sock Mouthguard Polar H10 is the perfect

Polar H10 is the perfect partner to many training devices

Heat regulating properties allows too much heat to move to the outer shell of the jacket

The contoured shape ensures a snug fit to the lower back

Adustable nose pads

1000 Mile Fusion Sock Mouthguard Polar H10 is the perfectThe Men's Fusion Sport Sock was the first of its kind to combine a double layer design with padded protection. Since its introduction over five years ago, it has remained one of the most popular socks in the range. Design Innovation Traditionally, running socks offered either padding for comfort or two layers for friction reduction. Padded socks were thick, while double layer socks were thin. However, the Fusion Sport Sock combines both features,