3 Adjustable Heating Modes: Onebutton control for easy switching between 3 heating levels Low (35/95 10hrs), Medium (45/113 6hrs), High (55/131 4hrs). Smart constant temperature tech ensures consistent warmth, keeping kids comfortable all day during school, play, or outdoor adventures. KidSafe Certified Design: CE/FCC certified for total peace of mind! Builtin NTC temperature sensors + overvoltage/overcurrent/shortcircuit protection prevent overheating. Safe for kids' sensitive skin no radiation, no risk of burns. Battery pack not included (compatible with 5V power banks). 10 Targeted Heating Zones: This kids heated vest features 10 ultrafine carbon fiber heating elements, focusing on key warmth areas, abdomen (under both pockets), back, and waist. Fastheating tech delivers uniform, continuous warmth with no hot spots, keeping kids' core cozy without burns. Perfect for active little ones! Lightweight & AllWeather Comfort: Made with advanced windproof, windproof nylon fabric perfect for autumn/winter rain or snow. Ultralight (only 268g) with soft, skinfriendly lining that fits snug without bulk. Easy to layer under jackets or sweatshirts, won't restrict kids' movement. Durable for Active Kids: Reinforced with wearresistant chin guard and heavyduty zippers stands up to rough play. Unisex design fits boys & girls, with sizes SXXL (suitable for ages 415). Machinewashable (remove battery first) for easy care.