Details: The Vesture MicroCore Lava Buns Heated Seat Cushion is The Best Seat In The House! The Lava Buns Cushion adds warmth and comfort to unforgiving bleacher stands at sporting events, concerts and other outdoor events. Each cusion contains a Microcore element that, once heated in the microwave, will hold heat for hours to keep you comfortable anywhere. Fishing, hunting and other outdoor activities are more fun, and even getting into the car on a cold morning is better with the LavaBun Heated Seat Cushion. Or you can put the Lava Buns Microcore element in the freezer Friday night & stay cool Saturday afternoon at the tournament. The Lava Buns stay warm or cool up to 6 hours. LavaBuns include a manufacturer s one year limited warranty and measure 17.25 L x 13 W, but fold in half for easy transport.