Montbell Seamless Down Hugger 900 Sleeping Bag #3

-1°C Comfort Limit (EN13537:2012), 210g of 900 Fill Power Down (US Method)
Weighs 492g (Regular bag)
Code: SS20396
  • £389.99
  • (FREE Delivery on orders over £15)
+ In Stock Now | Usually dispatched within 24 hours

(Unfortunately, we are unable to ship MontBell products outside of the UK)

We're working out what we think - we'll add our view here!

Montbell says:

Since 1975, Montbell has been innovating and creating better outdoor sleeping experiences with our sleeping bags. The Seamless Down Hugger series came about when we asked ourselves “How can we improve the down's ability to insulate?" When fully lofted, down traps air which provides insulation. The more air in the sleeping bag, the better it insulates. We began scrutinizing the elements of the sleeping bag that affect lofting ability. An idea proposed was to eliminate the baffles. Without baffles, the down would be unhindered and could loft to its fullest potential. But baffles prevent down from shifting and developing cold spots. Our next hurdle was developing a baffle replacement. Mother Nature provided inspiration and we developed a specialized thread called Spider Yarn. By placing a web-like layer of polyester yarns throughout the bag, we created a system that traps down and holds it in place. The "Spider Baffle System" was successful in maintaining a set amount of down, though a majority of the down is still able to move freely inside the bag. Although we’ve eliminated most of the exterior sewing lines, the interior features gathered quilts and elasticized stitching to promote comfort. By designing the sleeping bag in this way we’re able to reduce the amount of down used in the sleeping bag while maintaining the same thermal profile. This reduces some weight and provides a better value to our customers.

We're working out what we think about Montbell's Seamless Down Hugger 900 Sleeping Bag #3, we'll add our comments here in due course.

- Reviewed by Ultralight Outdoor Gear

Help and advice:Choosing a sleeping bag advice
 EN 13537 rating for sleeping bags explained
 Sleeping bag shape and sizes advice
 Sleeping Bag features Page 1
 Sleepin bag features page 2
 All about down filling in sleeping bags
  • Spider Baffle System (Patent pending)
  • Inner: Super Spiral Stretch System (US. Patent NO. 7,900,301)
  • Two way right hand zipper (59 in / 150 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 / laundry net sack included
  • Stuff sack included (Tapered, bias stretch stuff sack for easier packing)

Temperature Rating

  • EN13537:2012 Comfort: 4°C / 39°F
  • EN13537:2012 Comfort Limit: -1°C / 30°F
  • EN13537:2012 Extreme: -17°C / 2°F

Regular Specs

  • Weight: 492g (excludes storage bags)
  • Fill weight: 210g
  • Max user height: 6 ft / 183 cm
  • Internal Shoulder Girth: 149-194cm (59-76in)
  • Internal Knee Girth: 123-160cm (48-63in)
  • Stuffed size: 12 x 24cm


  • Insulation: 900 Fill Power EX Down
  • Shell: 7-denier Ballistic Airlight Nylon
  • Spider Yarn: 100% Polyester
  • Zipper: Two way right hand zipper (150cm)
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