The size chart in the images uses asian sizing, which is generally smaller than us sizing. We recommend choosing one size larger than usual. Smart induction heating: automatically heats when worn and shuts off when removed, preventing power waste and overheating. Three-level temperature control: high medium low settings with 30s fast heating and uniform warmth. Fingertip touchscreen: conductive thumb and index fingers for easy phone use dual-finger sensitive touch. Comfort & warmth: delicate fleece lining, soft wrap, lightweight insulation, windproof and cold-resistant. Safety & grip: sbr non-slip palm pad with wear-resistant microfiber and silicone for stable handling. Portable design: built-in combination buckle for backpack attachment hidden battery compartment eliminates long cables. High-capacity battery: 4000mah lithium battery, recyclable, type-c charging port, with battery indicator. Versatile use: ideal for cycling, mountaineering, skiing, outdoor sports, or daily leisure. Night safety: reflective logo enhances visibility in the dark. Easy operation: long press for power on off, short press to switch temperatures low-voltage heating ensures stability. Energy saving: intelligent sensor prevents accidental activation from pressure or folding.