- Washable and Skin-Friendly: Experience the comfort of our heated sleeping bag liner made from soft, durable polyester fabric. It features anti-lice properties, odor resistance, low moisture absorption, and quick-drying capabilities. Easily machine washable—just place it in a laundry bag before washing. - USB Input Safety: This USB-powered sleeping bag liner connects to your mobile battery (not included) using a DC input. Enjoy peace of mind with built-in safety measures against overvoltage and overcurrent. - Temperature Protection: The heated seat cushion includes an abnormal temperature protection feature, ensuring safety by preventing excessive heat. Stay warm and comfortable in winter with this reliable sleeping bag cushion. - Warm and Comfortable: Designed with high-insulation hollow cotton, the heated sleeping bag pad retains warmth effectively. It offers exceptional durability, safety, and flexibility for all your outdoor adventures. Use Cases: 1. Camping Trips: Keep warm during chilly nights while camping, ensuring a restful sleep in cold weather conditions. 2. Outdoor Events: Perfect for concerts or sporting events, providing comfort and warmth while you enjoy the experience. 3. Home Use: Ideal for cozying up on cold winter evenings, offering extra warmth while lounging or reading at home. Choose our heated sleeping bag liner for a reliable, comfortable solution to cold weather challenges.