Western Mountaineering Monolite Down Sleeping Bag

2°C Comfort Limit, 206g of 850+ Fill Power Down (US Method)
Weighs 398g (excluding stuff sack)
Code: SS21705
  • Now £369.99
  • (FREE Delivery on orders over £15)
Item out of Stock | Usually dispatched within 24 hours

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

Western Mountaineering says:

When you need a sleeping bag with the absolute minimum weight and packed volume, our Monolite could be the perfect solution. It is designed like the Flylite but without a hood to make it even more compressible and lightweight. Weighing less than a pound and stuffing down to about the size of your water bottle, it is a great choice for bike packing or adventure racing enthusiasts.

The 10 denier outer shell and lining materials are separated slightly by micro-baffles and it has an insulated top collar and draft tube behind a half length #3 coil zipper.

We're working out what we think about Western Mountaineering's Monolite Down Sleeping Bag, 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
  • 10 denier nylon shell fabric and lining
  • Lightweight #3 coil zipper (half length)
  • No sewn-through seams = no cold spots
  • Insulated draft tube
  • Fully baffled construction
  • Insulated top collar
  • Amazingly light and compressible


  • Length: 180cm / 6"
  • Weight: 398g (excludes storage bags)
  • Loft: 9.5cm
  • Inside girth: 105/130/99cm
  • Fill weight: 206g
  • Pack size: 13 x 25cm

Rating & Materials

  • Rating: 2°C *
  • Shell fabric: 10 denier Liteloft balanced weave nylon w/C-0 DWR
  • Lining: 10 denier Liteloft balanced weave, soft and breathable nylon
  • Fill: 190g (regular bag) Hypoallergenic 850+ fill power goose down
  • Zip: YKK #3 coil zipper (30" length) w/ locking reversible slider

* Western Mountaineering state: 'We independently verify own temperature ratings through our own testing, customer feedback and design knowledge. Most of the items in our catalog we have been making for years, which means we have lots of prior knowledge from everyday consumers on what ratings are accurate. We have also EN tested our bags. In every case the EN rating is lower than our posted rating. This means our ratings are more conservative. We do this to ensure that almost everyone will be happy in our bags at the temperature we publish.'

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