This hand warmer is made of safe and reliable materials, which can keep your hands warm in the cold winter. This is a for winter , no matter to whom it is given, it is a thoughtful and practical present. Features -Color:Light Grey -Material:Flannelette,graphene - Size: 26.00X15.50X4.00cm/10.22X6.09X1.57in - Size: 29.00X18.50X2.00cm/11.40X7.27X0.79in -Power supply: USB cable (included) -Note: Style - This hand warmer bag is like your caring lover, who can warm your hands in the cold winter. - Hand warmer is portable, so that it is suitable for many occasions, libraries, study rooms, schools, homes, offices, and so on. - Hand warmer has the right size so that it can be easily put in a backpack and taken out of the house. - Features the simple appearance and comfortable touch, which gives you a good mood. Folding design, easy to carry and store. - Hand warmer feels very comfortable and warm.You can watch TV, watch movies, chat with it during the cold season. Package list: 1 x hand warmer 1 x USB cable