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With its mummy shape and innovative construction, the HyperLamina Spark Long Sleeping Bag from Mountain Hardwear offers warmth in cool temperatures while remaining lightweight and compact.
The HyperLamina's Thermal Q 60 gram synthetic insulation is welded to the shell and liner, rather than simply sandwiched between two sewn-together layers of fabric. This method eliminates the cold spots that occur at stitching lines, where insulation is pinched and loses its loft. The insulation is "mapped" for extra coverage where it is needed most, your core and your feet. The bag's half zipper reduces the size of another potential source of heat loss.
Performance mummy cut keeps size & weight down
Lamina construction eliminates stitching lines that cause cold spots
Half zipper further reduces heat loss
Ultralight shell is soft and wind-resistant
In the Box
Mountain Hardwear HyperLamina Spark Long Sleeping Bag
Compression Stuff Sack
Limited Lifetime Warranty
Table of Contents
Comfort Temperature Rating
Extreme Temperature Rating
Length: 84.0" / 213.4 cm Width at Chest: 33.0" / 83.8 cm Width at Feet: 20.5" / 52.1 cm
6.0 x 13.0" (15.2 x 33.0 cm)
1.8 lb / 0.8 kg
Mountain Hardwear HyperLamina Spark Long Sleeping Bag Review