The K2 Women's Sapera Heat Snowboard Boots are perfect for intermediate to advanced riders looking for all mountain versatile conditions. These medium flex boots feature Therm-ic™ Heating System to keep your feet warm on the coldest days, offering 3 heat settings that provide warmth up to 19 hours, and fully charges in 7 hours with a USB cable. The Sapera Heat Snowboard Boots also offers Intuition® SpaceHeater™ Liners with reflective heat blanket panels, Intuition® Pro Foam 3D supportive liners, and a 3-Point Harness for simple supportive solutions. Besides having all-day heat control at your fingertips you will feel extremely comfortable in the 3D Formed Dual Density EVA Footbeds and Phy-Light Outsoles. Keep those feet of yours nice and cozy while you are out there playing on the mountain.