Mountain Hardwear HyperLamina Spark 35 Degree Mummy Sleeping Bag

The high performance Mountain Hardwear HyperLamina153 Spark sleeping bag features Lamina construction, with thermally mapped insulation and half length center zip to maximize efficiency. It's engineered to be the lightest and warmest synthetic bag available. Proprietary welded Lamina153 construction enhances loft and eliminates cold spots. Individual pillow panels are inserted between welds, providing warmth, and aiding in compressibility when stuffed. Zoned insulation maximizes warmth where it's needed most. Thermal.Q153 insulation has outstanding compressibility and maintains excellent loft. Single 5 half length center zip, with dual sliders, minimizes weight and allows for venting. Performance mummy cut is snug, reducing girth, weight and bulk, and maximizing thermal efficiency. Comfort foot box allows for natural foot position for comfort. Ultralight 22D Dobby 100% tactel nylon shell is soft and highly wind resistant. 20D 100% taffeta nylon lining. EN13537 Tested: EN Comfort: 40 DegreeF4 DegreeC EN Limit: 30 DegreeF 1 DegreeC EN Extreme: 1 DegreeF 17 DegreeC