Gossamer Gear Mirage 40
Ultralight Pack
~$450

Gossamer Gear

Gossamer Gear Mirage 40

Gossamer Gear's ALUULA Graflyte flagship, the Mirage 40 was released in December 2025 and trimmed by 0.8 oz in spring 2026. It weighs 18.6 oz on a carbon-fibre X-frame and is rated to 25 lb. Stock sells out between production batches.

Approx. price
~$450
Capacity
40 L
Weight
1.2 lbs
Best For
Gram-counting hikers who want a framed pack under 20 oz
Type
Ultralight Pack
Frame Type
Internal Frame
Capacity
40 L
Weight
1.2 lbs
Max Recommended Load
25 lbs
Torso Fit
One size, 16-20 in (hipbelt 28-44 in)
Material
ALUULA Graflyte V52 with UHMWPE stretch mesh
Back Panel
Carbon-fibre X-frame (0.125 in rods)
Warranty
One year against manufacturing defects, US purchasers
Raincover Included
No
Fits BV500 Bear Canister
No

Pros

  • ✓18.6 oz with a real frame is among the lightest framed packs sold.
  • ✓ALUULA Graflyte is a laminate with a high strength-to-weight ratio.
  • ✓A carbon X-frame transfers load without aluminium stays.
  • ✓Bottle pockets have cinch closures.

Cons

  • ✗$450 for 40 L is the most expensive pack in Gossamer Gear's range.
  • ✗One torso size, 16-20 in.
  • ✗No hipbelt pockets.
  • ✗Gossamer Gear builds it in batches, so it is often sold out between runs.
  • ✗A 25 lb ceiling limits it to light kits.
  • ✗One-year, US-only warranty.
Gossamer Gear Murmur 36
~$350
Ultralight Pack

At 7.9 oz, or 10.7 oz with the included torso pad, the ALUULA Murmur 36 is one of the lightest 36 L packs made. It is frameless, rated to 20 lb, with a removable FastBelt.

36 L0.5 lbsALUULA Graflyte

Weight

0.5 lbs

Capacity

36 L

Frame

Frameless

Best for: Experienced hikers with sub-10 lb base weights
Gossamer Gear Mariposa 60
~$315
Ultralight Pack

The Mariposa 60 is Gossamer Gear's signature pack, famous for its asymmetric pocket layout — one giant over-the-shoulder pocket that holds a tent, plus six more — and a removable back pad that doubles as a camp sit pad. It's the organized person's ultralight.

60 L7 Pockets2.14 lbs

Weight

2.14 lbs

Capacity

60 L

Frame

Internal Frame

Best for: Hikers who want everything reachable without opening the main bag
Gossamer Gear Gorilla 50
~$275
Ultralight Pack

The Gorilla 50 is the Mariposa's smaller, symmetric sibling — 50 liters, under 2 lbs, and the classic 'second pack' people buy once their kit shrinks. It keeps the sit-pad back panel and Robic durability in a cleaner silhouette.

50 L1.99 lbsClassic Second Pack

Weight

1.99 lbs

Capacity

50 L

Frame

Internal Frame

Best for: Dialed three-season kits that no longer need 60 liters
Gossamer Gear Skala 38
~$225
Ultralight Pack

Frameless and roll-top, the Skala 38 dates from March 2025: 38 L (30 L main) and 20.4 oz complete, made up of a 14.5 oz body, a 3.6 oz Fastbelt and a 2.3 oz pad. It is rated to 25 lb.

38 L1.3 lbsRoll-top

Weight

1.3 lbs

Capacity

38 L

Frame

Frameless

Best for: Thru-hikers who like a roll-top and want to shed belt and pad on easy days
Gossamer Gear G4-20 42
~$205
Ultralight Pack

Gossamer Gear's frameless classic is the G4-20: 42 L (30 L main), 24.8 oz in Medium, $205. A removable sit pad gives the back its structure, and the fixed hipbelt has pockets.

42 L1.6 lbs$205

Weight

1.6 lbs

Capacity

42 L

Frame

Frameless

Best for: Budget-minded ultralight hikers who want a frameless pack with real torso sizing
Gossamer Gear Fast Kumo 36
~$190
Ultralight Pack

A vest-style harness and a detachable Fastbelt carrying zip stretch-mesh pockets turn the 36 L Kumo into the Fast Kumo, a fastpacking take on the pack. It weighs 20.7 oz (S/M) or 21.5 oz (M/L) and costs $190.

36 L1.3 lbsVest harness

Weight

1.3 lbs

Capacity

36 L

Frame

Frameless

Best for: Fastpackers and runners covering big days with overnight gear