Mizuno Breath Thermo Racer MidSock Sock Size:X Large This lightweight merino wool sock

This lightweight merino wool sock is absolutely perfect for daily working

Strategic groove placement provides optimal comfort and traction

They’re ready to redefine everything you knew about open-ear listening with improved tech

Stance performance tabs deliver superior comfort with an informed

Made with tear proof woven fabrics

Mizuno Breath Thermo Racer MidSock Sock Size:X Large This lightweight merino wool sockThe 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