Coleman OneSource: Interchangeable rechargeable battery system for your outdoor gear and devices Adjustable heat settings: Choose from 4 heat settings and stay comfortable in all environments Dual capacity battery port: Holds 2 lithium-ion batteries to extend runtime and charge devices Foldable and Portable: Space-saving design with a carry handle for easy transportation Weather-Resistant: Crafted with weather-resistant fabric and nontoxic PU coating to withstand rain and outdoor elements Bleacher Hook: For additional stability during game cheers and includes a carry bag for convenience Strong Warranty: 1-year limited warranty for the seat and 3-year limited warranty for the battery May ship in packaging that reveals what's inside