Castelli Thermolite 9 Sock
- Thermolite hollow-core fabric
- 9 cm cuff
The Thermolite Sock is made for those in-between conditions when you need some extra warmth but still require a sock that can breathe well. Thermolite fabric insulates and manages moisture to keep you dry and comfortable. The Thermolite hollow-core polyester fibers bring plenty of warmth when the temperature drops and the flat-knit construction reduces bulk for an ideal fit with your shoes.