Mizuno Breath Thermo Racer MidSock Sock Size:X Large Mid-cut upper with rugged leather

Mid-cut upper with rugged leather materials

Made with tear proof woven fabrics

Fabric wicks sweat and moisture to exterior where it can evaporate or be absorbed by outer layers away from the head

Strategic groove placement provides optimal comfort and traction

Mizuno Breath Thermo Racer MidSock Sock Size:X Large Mid-cut upper with rugged leatherThe BT Racer Sock is a mid length sock for your coldest runs, made with our heat generating Breath Thermo technology, this lightweight sock boasts all the warmth you need without the bulk. BREATH THERMO: Mizuno's exclusive thermal fabric technology that uses escaping body vapor to generate heat. DRYLITE: Using a dual filament yarn construction to transport excess moisture away from the body to create a comfortable and dry body microclimate for best