Engineered to prevent frozen feet, the Burton Toaster Liner warms your snowboard boots up in less than a minute! DRYRIDE Heat Cycle Lining technology utilizes interwoven thermally activated carbon thread to capture, radiate, and reflect body heat inward to keep feet warmer while also wicking heat-robbing moisture outward for all day comfort. Low-profile, built-in heating system cranks warmth at a low, medium, or high setting. A single charge of the built-in battery lasts four to eight hours and the system recharges using the included micro USB cable. Plush Cuff 1.0 hugs your calf like no other thanks to a combination of medial and lateral neoprene stretch zones and a super soft fur lining. Hook-and-loop liner closure. Level 2 molded EVA footbed offers lightweight and long-lasting shock absorption. Aegis antimicrobial coating inhibits odors. ESS Support Shank reduces fatigue while preventing your arch from collapsing on itself when you bomb drop a 40-footer. 100 percent man-made materials. Imported. Measurements: Weight: 9 oz Shaft: 9 3 4 in Product measurements were taken using size 8, width B - Medium. Please note that measurements may vary by size.