Gossamer Gear Mariposa 60.

The Gavler Review.

Gossamer Gear Mariposa 60 Review: The Cottage Pack Thru-Hikers Actually Carry

The Gossamer Gear Mariposa 60 ranks 10th on Gavler's Best Hiking Backpacks list with a 7.9, and it's the pack that shows up on thru-hikers' backs more often than on editorial gear-closet shelves. CleverHiker put it through "extensive field testing on the PCT and CDT" and came away calling it "one of our favorite ultralight backpacks for thru-hiking" — with one clear catch: it isn't water-resistant, and you'll need to plan around that.

At 26 ounces, the Mariposa is a cottage-built pack from Austin, Texas that manages to be genuinely ultralight without feeling precious about it. The trade-off is a suspension system that tops out well before you'd expect from a 60-liter pack, and fabric that prioritizes weight savings over keeping rain out.

What it is

The Mariposa's defining feature is a removable closed-cell foam frame that does triple duty: structural support on the trail, a sit pad at camp, and a sleeping-pad insert if you need one. It's the kind of multi-function thinking ultralight hikers build their kits around, and it's paired with a single aluminum stay that Gossamer Gear rates for loads up to 35 pounds.

The pack's signature organizational feature is its massive stretch-mesh back pocket — big enough to swallow a wet rain fly or tent without touching the dry gear packed inside. CleverHiker's testing added detail Gavler's baseline data doesn't cover: three side pockets total (an easy-reach water bottle pocket, a higher "avocado" pocket, and a tall pole-length pocket), generous hip-belt pockets for daily items, and an ice axe loop for shoulder-season trips. The closure is a fold-top design unique to Gossamer Gear — CleverHiker's reviewer noted hikers "tend to love or hate" it, since it takes some adjustment compared to a standard roll-top.

In use

CleverHiker's comfort testing handled loads up to roughly 30 pounds and found the padding "effectively handled about 30 pounds and avoided aggravating typical pressure points." The aluminum frame and load-lifter straps transfer weight to the hips effectively, and the removable foam back panel improves airflow while doubling as that camp sit pad.

Water resistance is where the pack loses points across every account, including Gavler's own. CleverHiker's dedicated water exposure test "observed significant water penetration along the back panel and sides of the pack," tracing it to the lightweight 100-denier robic nylon body — a fabric chosen deliberately for weight savings, not storm performance. Side pockets do include drainage holes so the pack doesn't pool water it collects, but that's damage control, not water resistance. Budget for a pack liner; it's not optional gear here, it's a requirement.

Construction held up well over CleverHiker's "thousands of miles" of PCT and CDT testing, with reinforced 210-denier fabric at the high-wear bottom panel and lighter 100-denier elsewhere. The one recurring weak point both CleverHiker and Gavler's data flag is the stretchy mesh front pocket, which CleverHiker called "susceptible to snagging and tearing" — the price of a pocket that stretches enough to be genuinely useful.

Strengths

Gavler's scoreNote sums up the Mariposa's reputation accurately: experienced minimalist hikers "consistently rank it the long-trail community standard." That's not editorial hype — it's the pack section hikers and thru-hikers actually choose for themselves, which is a different and arguably more meaningful endorsement than a magazine's gear-of-the-year pick.

The sit-pad frame and mesh pocket are genuinely clever design choices that solve real on-trail problems rather than shaving grams for their own sake. CleverHiker's bottom line calls out "excellent weight distribution" and "clever features and organization" as the pack's core strengths, and its 4.7-out-of-5 rating from that outlet reflects sustained, multi-trail testing rather than a first-impressions review.

The trade-offs — who should skip it

The lack of water resistance is the biggest and most consistent complaint. If you hike in the Pacific Northwest, the Appalachians, or anywhere with regular rain, you're adding a pack liner to your kit either way — factor that into the total cost and weight before buying.

Load capacity is the second limit. Gavler's data pegs the comfortable range at 20-30 pounds and warns the single aluminum stay "does not transfer heavy loads" the way a J-curve frame does; CleverHiker's real-world testing landed in the same place, recommending you stay near 30 pounds even though Gossamer Gear rates the pack to 35. If your base weight is creeping toward 18 pounds or you're carrying long food or water resupplies, this isn't your pack.

Worth flagging for shoppers: CleverHiker lists the Mariposa's price at $315 and its weight at 2 lb 2.2 oz (34.2 oz) for a medium pack with S-M straight hip belt — noticeably higher than Gavler's baseline figures of $285 and 26 ounces. The gap is likely explained by size/belt configuration and typical price movement since Gavler's data was last verified, but it's worth confirming current weight and price directly with Gossamer Gear or a retailer before buying.

How it compares

The Durston Kakwa 55, ranked two spots below the Mariposa on the same list, undercuts it on price at $279 and claims a higher 45-pound load rating from its aluminum tubular frame — though CleverHiker's own testing of the Kakwa found that number "a bit ambitious" too, and the Kakwa has its own water-resistance gaps at the seams and hydration port. If comfort matters more than raw carrying capacity, the Mariposa still has the edge.

The ULA Circuit, ranked just above the Mariposa at 9th, is the pack to consider if you regularly carry more than 30 pounds. Its J-curve aluminum frame is built specifically for heavier loads, at the cost of a few ounces and a bit less refinement in the small organizational details Gossamer Gear is known for.

The Gavler verdict

The Mariposa 60 earns its reputation honestly: it's comfortable, cleverly organized, and proven over thousands of trail miles by people who aren't being paid to say nice things about it. But it demands you plan around two real limitations — it isn't waterproof, and it isn't a load-hauler. Buy it if your base weight is dialed in and your carry stays under 30 pounds. Look elsewhere if either of those isn't true yet.

Common Questions

Is the Gossamer Gear Mariposa 60 worth it in 2026?

For experienced ultralight hikers with a refined kit, yes. It ranks 10th on Gavler's Best Hiking Backpacks list with a 7.9, and CleverHiker — who tested it over thousands of miles on the PCT and CDT — called it 'one of our favorite ultralight backpacks for thru-hiking.' It's not the pack for beginners or heavy loads.

Is the Gossamer Gear Mariposa 60 waterproof?

No, and this is its most consistent criticism. CleverHiker's water exposure test found 'significant water penetration along the back panel and sides of the pack,' concluding the lightweight robic nylon 'necessitates using a pack liner or cover to protect gear in wet conditions.' Budget for a liner; don't expect the fabric alone to keep you dry.

How much weight can the Mariposa 60 carry comfortably?

CleverHiker recommends staying around 30 pounds despite Gossamer Gear's 35-pound max rating, and Gavler's own data agrees the single aluminum stay doesn't transfer heavy loads the way a J-curve frame does. Above about 32 pounds, look at the ULA Circuit or Durston Kakwa 55 instead.