Feature: 1. Soft fabric, built‑in thermal insulation fiber heating material, comfortable and wear‑resistant, durable. 2. Composite fiber heating wire, dense heating wire, uniform heating temperature, high temperature, not easy to oxidize, burn out circuit, and long service life. 3. Can put it directly in your jackets, vests and other clothes for warmth and heating. 4. Full waterproof coating is used to isolate outside, and waterproof effect is better. 5. Light and convenient, and easy to carry for outdoor camping or other activities in winter. Specification: Condition: 100% Brand New Item Type: Electric Heating Pads Power Supply: 5V2A Power Supply Mode: USB Charging Material: Composite Fiber Adjustable Temperature: 45℃-65℃ Gear Setting: Red (High-End), Blue (Mid-Range), Green (Low-End) Single Heating Film Size: Approx. 80 x 120mm/3.1 x 4.7in Scope of Application: Vests, clothes, belts, waist protectors, shoes Features: Washable, lightly rubbed, insulated, no static electricity, resistant to pulling. Package List: 1 x Electric Heating Pad Note: 1. The heating cloth must be plugged into a 5V2A power adapter (specially equipped in our store) or a 5V2A power bank, so that heating can achieve desired effect. If output is not reached, temperature control switch light will not turn on or heating effect will not be obvious when high temperature gear is used.2. When using, please wrap heating sheet up and down with a thick cotton cloth such as a towel before use. This is to prevent heat from being quickly dissipated, and temperature cannot be measured when placed on the table.3. Do not plug in the computer USB or use power bank port that does not reach 5V2A. When not in use, do not power on for a long time at high‑end, do not power on and wash, and it is strictly forbidden to pull switch wire forcibly to avoid damage to switch.