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By adopting a classic tailor's trick and paring it with high grade materials MontBell has brought extreme comfort and thermal efficiency to the light weight backcountry enthusiast. 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 800 fill goose down closer to your body and eliminating drafty dead spaces. Keep body heat inside your sleeping bag, where it belongs.

Specs

Material: 20-denier Ballistic® rip-stop nylon (Standard DWR treatment)

Weight: 746g

Color: PRIME GREEN (PMGN)

Size: R/ZIP, L/ZIP

Compressed size: φ16 x 32 cm

Max User Height: 198cm

[EN TESTED] 4℃ (Comfort), -1℃ (Lower Limit), -16℃ (Extreme)

※ We do not advise consumers to reference the extreme rating for general use.

Features:

• Super Spiral Stretch System (US. Patent NO. 7,900,301)
• Multi-Tube Construction
• Draw cord for face hole adjustment
• Single insulated zipper draft tubes
• Auto Locking Zipper to limit zipper ”slip” during the night
• 170cm mating right and left hand zippers
• Tapered, bias stretch stuff sack for easier packing included
• Cotton storage sack included

Details

Super Spiral-Stretch System

Offering sweet dreams with superior stretch and comfort for all shapes and sizes
By orienting the fabric’s warp and weft threads at 45 degrees to most major seam lines the sleeping bag becomes more fluid or elastic in nature. Additionally, to create an even more comfortable system we utilize an elastic stitch technique to create small “gathers” in the quilting. By combining the strategic seam orientation and the elasticized gathers we offer unrivaled fit and comfort.

BIAS STRETCH

Woven fabrics typically do not stretch vertically or horizontally without the utilization of heavy elastic materials. However, when stressed along the diagonal the same fabric will show stretch characteristics.

What is EN 13537?

The European Norm (EN) is a test designed and performed by an independent third party that seeks to standardize the way temperature ratings or thermal guidelines are established for sleeping bags.

The history and evolution of Montbell sleeping bags

For overnight hikes or long trails, a good night's sleeping is extremely important. If fatigue carries over to the next day due to a lack of sleep, it can contribute to an inability to concentrate, which could possibly lead to a stumble and maybe even injury. "Warmth" especially is a crucial element that can determine whether or not you get a good night's sleep. Montbell's president Fumiaki Masaki will take us through a history of sleeping bags in Japan, the transitions in insulating materials, design and functionality, and the ever important concept of "warmth".

POLKATEX: World class water repellent

Compared to standard water repellents, POLKATEX is world class water repellent due to its lasting durability. POLKATEX not only repells light rain easily, it also has oil repelling properties making it resistant to staining as well. Montbell's original application technique prevents POLKATEX from peeling off due to abrasion or washing, two of the most common reasons a standard water repellent will wear down over time.