Features:

• Includes 1 Battery Pack XLP ONE for use with Heat Socks XLP consisting of BootDoc’s Power Fit Socks integrated with Hotronic’s Heating Elements.
• Provides three (3) Constant Heating Power Settings for comfort and warmth maintenance. A fourth Boost Setting 4 offers an extra blast of heat when needed and is timed to reset to Setting 3 in three (3) minutes. Press-hold-and-release the Power Button to select the desired Setting. Easy to read LED lights indicate the Setting selected and when power is on or off.