Nathan Pinnacle 12L Review [Ultrarunner Tested]

Best Women's Fit and Easiest Access

Overall91

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Nathan Pinnacle 12L

Our score9.1/10

• Capacity: 12 L
• Our measured weight: 204 g (women's), 212 g (men's)
• Hydration: 1.6 L insulated hourglass bladder included; takes flasks
• Best for: Long mountain runs where you don't want to stop

Bottom Line : The most shirt-like vest we tested, and the one where you can reach almost everything mid-stride.

Pros

• Wraps the torso like a shirt
• Women's cut sits well around the bust
• About 80% of your kit reachable on the move
• Two rear kangaroo pockets

Cons

• Bladder hose needs trimming
• Velcro tab snags hair and knit shirts
• Long poles wobble in the rear sleeve

Out on the Mountain

Annie ran the women's Pinnacle on mountain runs of 30 miles and more. Her verdict was about fit: the chest contouring beat most unisex packs she has used, sitting comfortably around the bust with no crushing and no raw friction spots. James ran the men's version.

The fabric is fine and non-abrasive, and the vest wraps the torso the way a shirt does. Of everything we tested, it was the one that felt least like carrying a pack.

Access is the other headline. Roughly 80% of our food, kit and rubbish could be reached mid-stride. The two rear kangaroo pockets differ on purpose: one opens only from the side, the other from the top and the side. Blind grabs for a mid-layer or a headlamp were easy.

Three Things to Fix Before Race Day

Trim the hose. The included 1.6 L insulated bladder has a hose that is too long out of the box. We cut about 2.5 inches off so the valve sat flat on the sternum magnet rather than looping across the chest.

Close the Velcro. The small tab on the upper rear stash pocket grabs loose ponytails and snags fine knit shirts when it is left open.

Carry light poles. Ultralight folding carbon poles sit fine in the rear vertical pocket. Longer three-section trekking poles swung against the neck unless the main compartment was packed tight around them.

Spec Sheet vs Our Test

• Weight: we measured 204 g for the women's vest and 212 g for the men's. Nathan's Amazon listing gives 6.5 oz without the bladder and 12.5 oz with it.
• Hydration: 1.6 L insulated hourglass bladder included; flasks fit too.
• Pockets: Nathan counts 13 exterior pockets, which matches how much we could reach on the move.

Should You Buy the Nathan Pinnacle 12L?

Yes. It is the vest we would point a woman to first if unisex packs have never fit, and anyone who hates stopping to dig for food will like it too. Do the three fixes above once, and it is easy to live with.

Compare With

• Salomon ADV Skin 12: our best vest for 100-mile races.
• Ultimate Direction Ultra Vest 6.0: our best vest for wet weather.
• Nathan VaporAir 3.0: our best bladder vest.

See all ten in our best hydration vests guide.

Our Testers

This review was edited by Sean Williams and tested by our ultrarunning team.

• Sean Williams, Editor-in-Chief. Sean built the team of researchers and testers behind our reviews and edits every guide. His rule: we say what we actually found.
• Annie Brown, Tester. An ultramarathon runner, Annie tested our vests through 100k and 100-mile race preparation.
• James Brown, Tester. An ultramarathon runner, James ran the same block of self-supported mountain long runs, hot-weather tempo sessions and technical scrambles.