Sierra Designs Mariposa 60 Rucksack

Jump to: Our Verdict / Features / Specifications

UOG TOP PICK – Mariposa 60 Rucksack The iconic ultralight thru-hiking pack has been enhanced and refined. While maintaining its exceptional comfort and ample storage, the pack now features more durable fabric, an innovative PVT system, and improved load lifters, making it even better than before and solidifying its place as one of our top picks.

Gossamer Gear says: 

Named for the butterflies that can travel 100 miles a day. This world-famous pack weighs a little and hauls a lot. Recycled Robic nylon resists cuts and tears. Ample pockets make organization a breeze. The Mariposa is sized for big trips, bear canisters, and serious mileage. An S-curve harness and load lifters provide even weight distribution, and you’ll enjoy our signature PVT Frame+Belt: an aluminum, closed-shape frame and pivoting hipbelt that allow your pack to move with your natural gait for maximum comfort.

PVT Frame System – An aluminum, closed-shape frame provides rigidity and strength that matches your back’s contour. It slips in the pocket of a pivot belt that fits you like a glove. Together, the system allows your pack to move with your natural gait for maximum comfort.

Alternative Belt Options Available in multiple sizes, as well as straight and curved fits, this hipbelt hugs your body for optimum weight transfer. Say hello to less chafing and more comfort.

Redesigned Load Lifters The Gorilla load lifters have been redesigned alongside our new frame for an improved performance and better carry.

Our Verdict

Released in 2020, the Mariposa backpack has been a mainstay in our backpacking kit list since its arrival. Its exceptional carrying capacity and load distribution set it apart as a top-tier bag. The pack features a spacious main compartment and seven external pockets for organised storage. On the rear is a large mesh pocket, ideal for storing wet weather gear, and a long side pocket that perfectly fits most ultralight shelters. The two “double-decker” pockets on the opposite side are perfect for frequently used items like water filters or trowels. Additionally, there are two hip belt pockets and a small pocket on the lid for documents or a compact first aid kit.

This updated pack boasts tougher, more water-resistant fabrics reinforced at the seat of the bag and along the lower pockets, ensuring durability and protection from the elements. This more robust fabric seems to be where the pack has gained weight (it’s 100g heavier than its predecessor). The internal hydration pocket has been removed, which helps shed weight, but in all honesty, I have never used this pocket. This aligns with the Gossamer Gear “Take less, do More” mentality.

The new S-curve harness and load lifters contribute to enhanced comfort. At first, I was concerned about the latest model because the bag now sits higher than before (near the base of my skull). However, when the load lifters are pulled tight, the pack streamlines and sits comfortably on top of my shoulders like I’m used to.

The new PVT (pivot) Frame + hip belt system provides a snug fit and ample support. This innovative system places the pack’s aluminium frame in a pocket on the back centre of the hip belt, ensuring a secure and comfortable fit while effectively transferring weight and promoting flexibility. The hip belt system offers a customisable option, with a straight belt for men and a curved belt for women, ensuring a personalised fit for every adventurer.

Overall, the enhanced Gossamer Gear Mariposa 60 backpack represents a significant advancement in backpack design, combining functionality and comfort in a lightweight and durable package.

– Reviewed by Ultralight Outdoor Gear

Features

• S-curve harness and load lifters
• Comfy, removable PVT Frame+Belt
• Large external stretch-mesh pocket
• Trekking pole attachments
• Hydration tube router
• Headphone port
• Side ice axe loop
• Tough recycled Robic fabric

Specifications

Small 

• Weight including SitLight Pad + S/M Curved hip belt:
• Height: 22” / 56 cm to the extension collar only
• Width: 11” / 28 cm
• Depth: 5.5″ / 14 cm
•  

Medium 

• Weight including SitLight Pad + Medium Straight hip belt: 1005g
• Height: 24” / 61 cm to the extension collar only
• Width: 11” / 28 cm
• Depth: 5.5″ / 14 cm
• •  

Large 

• Weight including SitLight Pad + Medium Straight hip belt: 1039g
• Height: 26.4” / 67 cm to the extension collar only
• Width: 11” / 28.0 cm
• Depth: 5.5″ / 14 cm
• •  

Capacity

• Total capacity: 60L
• In main pack body to extension collar seam: 36L
• Spread Across 7 Exterior Pockets: 24L
• Max carry capacity: 35 lbs
• For comfort: 30 lbs
• •  

Material & Construction

• Updated to a more durable 100D & 210D Recycled Robic Nylon
• PFAS-free

Help & advice:

• The Ultimate Guide to Choosing an Ultralight Rucksack
• Time-Saver Guide to Choosing a Rucksack
• Gossamer Gear’s updated Mariposa. What’s changed?
• Recycled Content in Outdoor Gear