By adopting a classic tailor's trick and paring it with durable, high value materials Montbell has brought extreme comfort to those passionate about outdoor recreation. We found that integrating a woven fabric "cut on the bias" and orienting the fabric's warp and weft threads at 45 degrees to most major seam lines the sleeping bag becomes more fluid in nature. To create an even more comfortable system we utilize an elasticized thread in the stitch to create small "gathers" in the quilting. Through the combination of strategic seam orientation and the stretch provided by gathered quilting we offer unrivaled fit and comfort. These innovations allow the sleeping bag to move with you as you change positions throughout the night, drawing the insulation closer to your body and eliminating drafty dead spaces. Keep body heat inside your sleeping bag, where it belongs.

Specs

Material: 30-denier Super multi polyester taffeta (water repellent finish)
Insulation: 650 Fill Power Down
Weight: 695g（720g) (weight with stuff bag)
Color: BALSAM (BASM)
Size: R/ZIP, L/ZIP
Compressed size: Ø5.9 x 11.7 in (Ø15 x 30 cm), 4.7 L
ISO TESTED: 38°F / 3°C (Comfort), 28°F / -2°C (Lower Limit)
Max User Height: 6 ft / 183 cm
Shoulder girth when relaxed: 59 in / 149 cm
Shoulder girth when stretched: 76 in / 194 cm
Knee girth when relaxed: 48 in / 123 cm
Knee girth when stretch: 63 in / 160 cm

Super Spiral Stretch System (US. Patent NO. 7,900,301)
Multi-tube construction
Two way right or left hand mating zippers (67 in / 170 cm)
Anti-snagging slider cover
Hood Adjuster (Draw cord for face hole adjustment)
Insulated Flap (covering the zipper to shut out cold air)
Auto Locking Zipper (to limit zipper ”slip” during the night)
Triangle Gusset (Reinforcement at the end of the zipper)
Storage sack included
Stuff sack included (Tapered, bias stretch stuff sack for easier packing)

Cotton storage sack included

Laundry symbols

Gear>Sleeping Bags / Pads>Down Hugger 650

Gear>Sleeping Bags / Pads>Down Models

Gear>Sleeping Bags / Pads>Super Spiral-Stretch System

Activity>Trekking>Sleeping Bags / Pads

Activity>Emergency>Sleeping Bag/Pad/Cot