Description: With 3 levels of adjustment and double-sided heating, this hand-warming bag will keep you warm in winter. Unlike traditional hand warmers, this one is designed without water, which is safe and does not leak. This hand warmer is constructed of polyester material. The unfolding size is 40cm in length and 26.5cm in width.The folding size is 20cm in length and 26.5cm in width. This hand warmer is suitable for daily use. Item Name: Hand Warmer Material: Polyester Features: Long-term Preservation, 3 Gears, Double-sided Hot Power Supply: USB Rated Voltage: 5V Rated Power: 5W Heating Method: Graphene Size Details: Unfolding Size: 40cm x 26cm/15.75" x 10.24" (Approx.) Folding Size: 20cm x 26cm/7.87" x 10.24" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hand Warmer