Spark, SP0 10C / 50F, Regular 0, 10C / 50F, Regular Size:- and providing the breathability of

and providing the breathability of cotton

Made with Nylon

but hard enough to resist deforming and pulling through

in a smaller

the Atris Birdie concentrates on four things: stability

Spark, SP0 10C / 50F, Regular 0, 10C / 50F, Regular Size:- and providing the breathability ofThe 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 for the designed end use. Ultralight does not mean ultra tight: The Spark mummy sleeping bags are snug but still have adequate girth for the performance oriented backcountry user.