Spark Ultralight Sleeping Bag bike injury prevention Patented Head Support Bridge Attachments

Patented Head Support Bridge Attachments close the gap between rear seat and cargo floor for a completely flat sleep surface

safeguarding your vehicle's undercarriage

optimal ventilation

Get out and stay out — with 10+ hours of rechargeable battery life

Crafted from robust 3/16" steel plate

Spark Ultralight Sleeping Bag bike injury prevention Patented Head Support Bridge AttachmentsEngineered to keep you warm at the lightest weight and smallest compressed size The Spark Ultralight Mummy Sleeping Bag Series spans everything from an ultralight down filled liner, to a mid winter fast and light sleeping bag. Each model uses premium materials and no frills design to provide cutting edge performance. Ultralight does not mean ultra tight: The Spark mummy sleeping bags are snug but still have adequate wiggle room for the performance