3 levels heating model : The double heated stadium seats for bleachers are heated by USB power bank. Both the backrest and seat cushion are equipped with independent heating functions, featuring high, medium, and low temperature settings. It can be heated up to 130 °F quickly. Users can freely adjust the temperature according to personal preference and external conditions, which can make you more convenient and comfortable . (Note: USB power bank is not included) Durable & Comfortable Materials: The heated bleacher seat with backrest is covered in high-quality 600D waterproof oxford cloth and padded with metal and pearl wool, it effectively resists moisture from rain, spills, dew, and other elements, safeguarding its internal structure. The oxford cloth is easy to clean, requiring only a simple wipe to restore its dryness and freshness, ensuring long-lasting durability. Convenient Multi-Adjustable Design: This heated bleacher seat has six adjustable angles, it allows you to find the perfect sitting position, whether you're camping ,traveling , enjoying the scenery, or watching sport games. It is really easy to set up and take down. It has buckles and hook on the bottom for the bleachers, so it can be easily secured to most bleachers and benches without slipping easily. Flexible Width Adjustment: The width of the seat is 16 inches，if you use the armrest , and if you want a larger size, you can lower the armrest, the width can be increased to 21 inches. Although the seat is very thick, it is very light, and there are two backpack straps on the back, so you can easily carry it anywhere. Easy to store : With 4 pockets and a big pocket on the back designed for storage, it offers a convenient way to keep beverages, food, and other essential items neatly organized. It is really perfect for outdoor sports games and events,hiking,travelling,camping,fishing. Double heated stadium seats with arms and back support, great for sports events