3 Levels Temperature Adjustment：The heated stadium seat offers three adjustable heat levels (low, medium, high), reaching up to 115°F. Customize your warmth to stay comfortable in any outdoor condition, from chilly sports events to cold camping trips.【Excluding power bank: Please purchase power bank separately!!!】 USB Power Heating: The heated stadium seats for bleachers connect via a 70cm USB cable to a power bank (not included), offering up to 6 hours of warmth. Choose battery capacities for 1.5 hours (2500mAh), 3 hours (5000mAh), 4.5 hours (7500mAh), or 6 hours (10000mAh) Ergonomic Design: The stadium seats for bleacher with back support features a thickened cushion and strong support to prevent sagging. Its ergonomic design ensures excellent back support and comfort, making it ideal for prolonged sitting at any event Durable and Storage Design: The stadium seat is crafted from waterproof, tear-resistant 600D Oxford fabric for durability and easy cleaning. The bleacher seat Features ample storage with a mesh pocket and a zippered pouch to keep your essentials organized and accessible Foldable Design: The stadium seats for bleacher easily folds to a compact size for effortless storage and transport. Its design includes a handle and shoulder strap for convenient carrying to and from sports events, camping trips, football game and more Fitense Heated Stadium Seat for Bleachers with Back Support, Folding USB 3 Levels Heated Stadium Chair, Portable Stadium Seat Cushion for Outdoor,Camping Games,Sports(Wide 17inch)