Features: 1. 3 Speed Temperature Indicator Light: Red 50-55℃, blue 45-50℃, green 40-45, to choose between by simply pressing the power button. 2. Fast Heating Hand Warmers: Electric hand warmer offer you instant double-sided heat in just seconds, it heats up fast with the punch of a button, for plenty of heat to keep your hands warm in colder weather. 3. Considerate Design: Soft and comfortable velvet and zipper to ensure your normal use in more weather conditions, design with adjustable shoulder strap, hands are free at any time. 4. USB Interface: With the USB interface design, the heated gloves hand warmers bag can be powered via your PC, power bank, or car charger, and can work for up to multiple hours after fully charged. 5. Ideal Gifts for Outdoor Activities: The hand warmers are a perfect gift for your family members and friends at Christmas, birthday or special festivals, warm hand and body in cold weather, such as fishing, hiking, camping, and so on. Specification: Material: Velvet Product Color: Black, Grey Voltage: 5V Product Size: 32 x 13cm Product Weight: 190g Package Included: 1 x Hand Warmer Pouch