Protects and air conditioned, from start to finish. The X-Socks X-Factor is the perfect choice for all those who ski an individually foamed ski boot. Racers and experienced technicians also prefer this sock with its thin shaft. The X-Socks X-Factor thus offers the fine feeling for skis and edges demanded by these skiers. A perfectly foamed inner shoe makes calf pads superfluous. The stabilising X-Cross ankle support, the pressure-relieving tibia protector and the AirConditioning Channel including the AirFlow Channel System, which is responsible for an effective air exchange and dry feet, cannot be dispensed with. Heel, forefoot and Achilles tendon protector complete the protection package of this high-tech sock.