Hotronic's XLP PFI 50 socks are integrated with Hotronic's heating elements allowing for maximum toe warmth and blood circulation. They are a wool blend and use BootDoc's Power Fit Technology to create a relatively gradual pressure distribution to enhance performance as well. These socks function as an additional set of heat socks or as a replacement pair to be used with your Hotronic XLP One battery.

• 1 pair of Classic Heat Socks XLP PFI 50
• Socks Only. Does Not Include Batteries or re-charger
• Power Fit Index of 50
• Maintain foot warmth while reducing perspiration
• Must be used with a Hotronic XLP one battery and recharger