2 Go Systems Thérmē Hybrid Sleeping Bag / Underquilt
The thérmē sleeping bag/quilt quickly converts from an envelope-style sleeping bag to a mummy-style using four built-in side loops. This doubles the insulation around the feet and legs. This conversion is perfect for smaller individuals or people who prefer more warmth in the lower section. Unlike other down bags, the thérmē also has a built-in safety factor: The integrated reflective layer is unaffected by moisture and reflects body heat even when wet.
The Many Configurations of the Thérmē Hybrid Sleeping Bag:
* Alone as a single sleeping bag
* Two zipped together for a two-person sleeping bag
* Open flat for a down blanket or comforter
* Hammock under-quilt
* Cinched closed for a hammock pod
A few unique features:
-Down hood is removable and can be snapped into the sleeping bag, used alone or used as a down hat.
-Each end of the bag has a drawstring to cinch the bag around a hammock in the under quilt configuration.
-It can be used as a hammock pod system which fully zips.
-It has two built-in and removable shock cords for the hammock configurations.
-The reflective layer throughout the whole bag adds more protection from the ground and enhances your sleeping pad capability.
Outer shell: Water-resistant 380T 20-denier nylon (900mm hydrostatic).
Inner lining: Breathable water-resistant 380T 20-denier nylon.
Insulation: Hybrid 26oz (737g) pure duck down, with the integrated thermal reflective layer.
Hood: Detachable, down-lined.
Baffle: 4.75″ (12cm) box-stitched (see below).
Size (closed): 78.74″ x 33.5″ (200cm x 85cm), not including hood.
Size (flat): 78.74″ x 66.9″ (200cm x 170cm), not including hood.
Packed weight: 3.19lb (1450g) with hood, accessories, sack
Individual weights: Hood:.4.oz (115g), Bag:2.8lb (1270g), Storage sack 2.3oz (65g)
Hammock suspension is removable for a weight savings of 1.9oz (55g)
Packed size: 9″ x 8″ (22.8cm x 20cm).
Nylon stuff sack with zipper pocket included.
Temperature rating: Extreme Lower limit estimated -15°F, Lower Limit (men) ~0°F, Comfort (women) ~10°F, Upper Limit 30°F. Formal [EN13537](https://en.wikipedia.org/wiki/EN_13537) testing and rating to be completed shortly.
The thérmē is box-stitched and doesn’t use a conventional [baffle-box design] Understanding Baffle Construction , for several reasons. First, the hybrid integrated insulation means the down loft is less critical overall. Second, box-stitching lowers manufacturing costs while maintaining equivalent performance. Thirdly, box-stitching lowers weight by avoiding the extra material required to support the sidewalls.
A personal recommendation for the thérmē would be to unsnap the hood from the bag and wear it, then tighten the thick down air baffle around your upper shoulders and hood.