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Aegismax M3 lengthened down sleeping bag

$156 USD Aegismax M3 bag
The Aegismax M3 lengthened down sleeping bag is available for $156 USD delivered on Aliexpress.

  • Contoured mummy
-style bag with box baffles
  • 15D nylon outer, 20D inner
  • 550g 800FP 95% goose down fill
  • Usable to around -5 Celsius
  • Open: 210 x 82cm (L size)
  • Packed: 25 x 15cm diameter roll
  • 1.040kg

Discounts (USD):


The Aegismax M3 lengthened is a goose down mummy-style sleeping bag that features proper box baffles (not sewn through) and breathable nylon fabric.

It is available in two versions:

Medium version:
  • Dimensions: 190 x 78cm
  • Filling: 500g 800FP 95% white goose down
  • Weight: 0.960g
  • ~$10 USD less than L size

Large version:
  • Dimensions: 210 x 82cm
  • Filling: 550g 800FP 95% white goose down
  • Weight: 1.040kg

Bag specifications:
  • Outer fabric: iFlex 5600 15D nylon
  • Inner fabric: iFlex 5100 20D nylon
  • Differential fill (65% top / 35% bottom) with side block baffles
  • Zipper: YKK #5
  • Duraflex buckle
  • Hood cord cinch
  • Blue colour

Pros
  • Side block baffles prevent down migrating around the bag
  • Breathable 15/20D nylon fabric lessens sweating
  • Decently sized footbox
  • Storage and compression bags included
  • Splicing bag - M and L sizes can zip together to create a double bag

Cons
  • At ~1kg it is not ultralight
  • Regular version a bit narrow at 78cm
  • Differential fill means less down on the bottom than the top - if a side sleeper your back is less protected
  • M zips together with L only (not M-M or L-L) due to zipper placement
  • Medium size difficult to stuff into compression bag - large version comes with bigger compression bag



Fully closed
Partially unzipped
Footbox
Zipper
Hood cinched
Rolled for storage
In compression bag


Further Resources

Pictures of the M3 Lengthened bag
adventure-us.guide review of the M3 Lengthened bag

Reddit
Reddit thread about this bag
Aliexpress/Naturehike gear review and trip report
AegisMax M3 Review

Youtube
AegisMax M3 Review
Youtube review of the M3 Lengthened by adventure-us.guide

Misc
Temperature scale for Aegismax bagsComparison table of Aegismax sleeping bags
Sleeping Bag Construction: Baffles, Layers, and Shingles
The low down on down