Lava Seat Heatable Seat Cushion sells on Amazon. I think the price is very good. Please read some of the reviews and see what people thought of the product. Do check how you might qualify for a free shipping offer if available.
- The LavaSeat is lightweight, durable and folds down to a convenient carry pack
- Soft sherpa exterior provides superior heat retention
- Patented Microcore reusable pack heats in the microwave – no cords
- Great for arenas, sporting events, fishing, camping or just staying warm in the great outdoors. Makes a great seat back for driving and can be chilled to use as a cool seat.