Spark Ultralight Sleeping Bag bike injury prevention Get out and stay out

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

full-size sleep

optimal ventilation

powerful 12V pump (under 1 minute per side)

Spark Ultralight Sleeping Bag bike injury prevention Get out and stay outEngineered 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