This is a hand warmer, made of materials, and can be used for a long time. The hand warmer with cute shape is very durable and very popular. Strong practicability and easy to carry. No charging, no irrigation, only need to replace the heating core. Features -Color: Random Color -Material: Silicone -Size: 8.00X6.00X1.00cm/3.14X2.36X0.39in -Note: It is heated by heating core bag(not included) -Made of excellent materials, durable, not easy to deform and break. -Perfect for keeping warm in winter, relieving pain, heat treatment and more. -The shell of hand warming egg is made of softer silica gel, which is comfortable and not stimulating, softer and comfortable, and can be rubbed without deformation. -It is small and lightweight, does not occupy of space, and is easy to carry. -Easy to use, and safe, just replace the heating core inner, which is convenient. Package list: 2 x Silicone Hand Warmers