This is the older version of the world renowned Mariposa II backpack from Gossamer Gear. They have since updated the pack with great features while still making it ultralight and very comfortable.

The latest incarnation of our flagship backpack, The Mariposa™ II Ultralight backpack, is absolutely loaded with size, features, pockets, and new materials. Built on the same basic platform as previous iterations we have upgraded it for durability, functionality, and feature set.

Looking at Half Dome in Yosemite

Looking at Half Dome Yosemite, CA

The Mariposa™ is constructed largely of our custom 140 denier #Dyneema #Gridstop™ fabric for a sweet-spot blend of toughness and weight. The 2012 Mariposa™ now sports 7 exterior pockets for loads of options for organizing and accessing your gear. The Mariposa™ Ultralight is a top loader and utilizes our OTT™ (over-the-top) closure system for a simple, solid, secure closure that also includes our largest zippered top pocket. Also new is a taller more padded hip belt with integrated pockets for a plusher more comfortable ride. Completing the harness is our new comfy curved shoulder strap system with our whistle buckle sternum strap and d-ring accessory mounting system. The 2012 Mariposa™ backpack has our New “Shock Top™” shock cord top-of-the-pack lashing system for attaching your foam pad or other gear to the top of the pack. Inside the pack you’ll find an updated version of our proprietary removable stay and an integrated hydration sleeve. At just over a pound and a half complete the Mariposa™ remains Ultralight to the core and is tougher and more feature rich than ever. This ‘Posa™ is slightly larger than the last and our sizing has changed slightly as well so please refer to the SPECS tab for more information.

The 2012 Mariposa™ ultralight backpack is a LARGE volume pack that is suitable for most any type of backpacking trip. The Mariposa™ is best with loads under 30lbs. but will handle up to 35 just fine. It comes with a SitLight™ pad, removable stay, removable hip belt, and integrated but removable shock cord lacing, 2 cord locks and mini cord clip.


Small: 25.75 oz ( 729 g. ) Average Total for all items included
Medium: 27 oz. (765 g.) Average Total for all items included
Large: 27.60 oz. (783 g.) Average Total for all items included
XL (tall): 30.00 oz ( 857g. ) Average Total for all items included. This was weighed with a XL belt and the long sitlight that comes with it.
This includes:

Total fully loaded weight Medium/Medium
Pack Body = 15.85 oz (409 g) (Average for medium size)
Removable hip belt = 5.15 oz. (146 g.) (Average for medium size)
Aluminum curved stay = 3.5 oz. each (96 g.) (Average for medium size)
Sitlight Pad = 2.0 oz ( 51 g. ) (Average)
extra shock cord and cord locks .55 oz (16 g.)
Capacity (Size Medium)

4,244 c.i. (69.5 l.) total
2860 c.i. (47 l.) in main pack body/extension collar
1384 c.i. (22 l.) in all 7 pockets combined
35 lb. maximum carry capacity

Small (13″ – 16″ torso) (33 – 41 cm.) {Generally fits people 4′ 11″ to 5′ 4″ , depending on body type and how you wear your pack}
Medium (16″ – 19″ torso) (41 – 48 cm.) {Generally fits people 5′ 4″ to 5′ 9″ , depending on body type and how you wear your pack}
Large (19″ – 22″ torso) (48 – 56 cm.) {Generally fits people 5’ 9″ to 6’2″ , depending on body type and how you wear your pack}
Xtra-Large (22″ – 25″) ( 56 – 63.5 cm.) {Generally fits people 6’2 ” to 6’7″ish, depending on body type and how you wear your pack}

140 denier Dyneema GGridstop coated ripstop nylon
Select use of 1680 denier ballistic nylon for reinforcement.
Select use of 210 denier urethane-coated double-rip ripstop nylon
Select use of 30 denier silicone coated ripstop (silnylon)
XTC fabric for harness lining
Power mesh fabric – pad holder and large pocket

Black & Grey & Orange


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