Ultimate Direction Race Vest 6L Review: 175 g and 9 Pockets

175 grams on the scale. Six liters swallowed without bulging. Six unisex sizes, from XS to XL, to cinch down on a slim chest or a broad torso. Ultimate Direction refreshes the Race Vest 6L in 2025 and places it squarely between pure skyracing and mid-distance trail. The stated spec sheet: zero bounce, zero chafing, direct access to your fuel. We cross-checked long-term tests and independent measurements. Verdict below.

Ultimate Direction Race Vest 6L: skyracing reimagined, Colorado style

The Race Vest 6L doesn't reinvent anything. It refines. Ultimate Direction, the historic Colorado brand, reworks its 6-liter vest, added to the spring-summer 2025 collection, with a vest-style chassis that wraps the torso from end to end. The promise comes down to three numbers: 175 g empty, 6 L of capacity, 9 pockets you can reach on the run. And one detail that changes everything for trail runners shopping in France: six unisex sizes, from XS to XL. While competitors often stop at three sizes, that full range makes UD the most reliable option when your torso falls outside the standard.

The positioning is clear. Not a vest for a 1-hour outing. Not a self-supported ultra pack. A Race Vest built for skyraces and 20 to 50 km trail races, where every second spent fishing for a gel costs you places. The claimed benefits: a sternum daisy chain that adjusts to the millimeter, 2 HydraPak Body Bottle 500 ml flasks included, compatibility with a back bladder, a built-in safety whistle and reflective detailing on the rear logo.

RunMorph's advice: before you click through to the product page, ask yourself the real question. How many hours will you run with this vest? For under 2 hours in dry mountains, the NNormal Race Vest 5L still leads on weight versus pockets at 174 g. Beyond that, for self-supported short ultras of 60 to 100 km, the Compressport UltRun S Pack Evo 10, at 117 g and 10 L, offers more capacity for less mass. The Race Vest 6L sits in the hybrid zone: punchy skyraces, technical trail races and training long runs where you want a snug fit without giving up 9 pockets. That's exactly the niche UD has targeted for twenty years.

© Ultimate Direction, official photo used for editorial purposes

Technical specs

Who is the Race Vest 6L for?

1- to 2-hour training runs in the mountains

Honest answer: the Race Vest 6L is oversized for short outings. 6 L of capacity is three times what you need for an hour-long easy trail run with one flask, a gel and a wind jacket. Weight stays competitive (175 g, barely more than the NNormal Race Vest 5L), but you're paying for space you don't use. If most of your running is short training sessions in dry mid-altitude mountains, go for a more minimalist 5 L vest. If, on the other hand, you mix short runs, long Sunday sessions and trail races, the versatility justifies the price tag.

Skyraces and 20 to 50 km trail races

This is where the vest is in its element. Stretch side panels that hug the torso, daisy-chain sternum straps that kill bounce even at 5 min/km on descents, 9 pockets to stash poles, gels and bars, and 1 L on tap in the front flasks. Competitive runners get exactly what they need: not a second lost digging through a main compartment, everything sits on your chest. Plenty of seasoned athletes have run with UD for ten years for this very reason, and the 6L version pushes accessibility a notch further with zippered ripstop pockets wide enough for an iPhone 15 Pro Max.

Self-supported ultras of 60 to 100 km

Clear verdict: no. 6 L isn't enough for a full UTMB mandatory kit (waterproof jacket + emergency blanket + 1 L reserve + gels). You can compress things, but it's a struggle. Beyond 60 km of true self-sufficiency, 10 L is the bare minimum. On that terrain, the Compressport UltRun S Pack Evo 10 or the Raidlight Ultralight 12L make more sense. The Race Vest 6L doesn't play in this category and doesn't pretend otherwise.

© Ultimate Direction, official photo used for editorial purposes

Comfort, bounce and secure fit

This is the criterion that makes or breaks a trail vest. Ultimate Direction bet on three levers: a wraparound stretch chassis, a hook-fastened sternum daisy chain and anti-chafe mesh panels behind the flasks.

First, the chassis. The main fabric blends 45% nylon, 45% polyester and 10% spandex. On the trail, that means it follows your rib cage without squeezing it. Deep breaths on steep climbs aren't restricted. Experienced runners know overly stiff vests choke you at altitude; that problem doesn't exist here. The back is lined with perforated micromesh that ventilates well in hot weather without soaking up sweat like a sponge.

Next, the sternum daisy chain. Two straps mounted on continuous perforated webbing, with hook closures. You set the height to the centimeter, not notch by notch. That's valuable for positioning the strap between the two flasks so they don't bang against your sternum. The verdict from long tests over 50 km of racing: bounce stays under control even with both Body Bottles full (1 kg carried up front), as long as you tighten the lower strap properly (the classic mistake is leaving it slack).

Real-world drawback: the lower stretch-mesh compression strap works well once properly tensioned, but it can creep during long races. On a short ultra at 30 km, recheck it at the main aid station without fail.

Pockets and accessibility: the UD signature

Nine pockets. That's a lot, and it's what sets the Race Vest 6L apart from the minimalist 5 or 6 L vests of its rivals.

Up front, you get two water-repellent zippered ripstop pockets sized for large smartphones up to 17 cm. The zippers are sturdy and glove-friendly, and you can work them one-handed even with gloves on. Below each ripstop pocket sit two stretch mesh shove-it pockets for gels and bars, quick to reach between finger and thumb. Lower still, the two flask sleeves with bungee loops keep the Body Bottles upright even as they empty. That three-tier stack is what makes the front so functional: you never need to take the vest off to grab a salt packet.

At the back, a large waterproof zippered pocket with a built-in key clip holds your safety gear (jacket, emergency blanket). Above it, a wide stretch passthrough pocket across the back takes an extra layer and stays reachable from both sides mid-race. Finally, a smaller zippered pocket handles ID and a bank card.

For poles, UD went for total flexibility: four removable bungee loops with hooks. You choose front carry (Salomon Quick Pole style) or rear carry (classic side-strap style). The smart move is to mount the loops up front for technical races (fast deployment) and at the back for training runs (less in the way when the clock matters less).

Hydration: the flask vs. bladder compromise

Ultimate Direction includes two HydraPak Body Bottle 500 ml flasks with bite valves. Total flask capacity is 1 L. That's the skyrace standard: enough for 1 h 30 to 2 h in normal conditions, tight in summer heat above 30°C.

The vest takes a back bladder of up to 2 L (1.5 L being the most sensible size), with a ventilated internal sleeve and a retaining strap. The reservoir isn't included: budget an extra €25 to €35 for a compatible HydraPak. The tube routes through loops over each shoulder. There's no magnetic sternum tube clip out of the box, a weak point against Salomon vests, which now fit this system across their ranges.

On flow, the UD 500 ml Body Bottles are less controversial than older generations (the spit valve issue has been fixed on the current format). But Compressport Ergoflasks and Hydrapak Softflasks remain a notch above for clean flow. Good news: standard 500 ml flasks on the market (Salomon Sense Soft, Hydrapak Ultraflask Speed) fit the UD sleeves without any trouble.

How it stacks up against the competition

Three vests in the same capacity range deserve a head-to-head with the Race Vest 6L.

Against the NNormal Race Vest 5L (174 g, 5 L, €135): the NNormal weighs 1 g less but carries 1 L less. The Race Vest 6L wins on pockets (9 vs 6), micro-adjustment and size range (6 vs 3). The NNormal wins on pure minimalism and its Dong In manufacturing in the Philippines. Verdict: for short, pure skyrace racing, NNormal. For long runs plus racing, UD.

Against the Compressport UltRun S Pack Evo 10 (117 g, 10 L, €170): the Compressport crushes it on the scale with a record 117 g for 10 L, meaning 4 L more for 58 g less. On paper, it's unbeatable. But the Compressport relies on a front elastic zigzag closure, with no micro-adjustable sternum strap. The second-skin feel is strong and bounce is nil, but pocket access is less ergonomic in a race. Verdict: for self-supported short ultras of 50 to 100 km, Compressport. For punchy 20 to 50 km skyraces, UD.

Against the Salomon Adv Skin 12 (244 g, 12 L, €165): two different worlds. The Salomon is the self-supported ultra benchmark, with its 12 L and a Sensifit Sweep system that redefined the market standard. It weighs 69 g more for 6 L more, the best capacity-to-weight ratio in the large-capacity segment. Verdict: if your calendar revolves around ultras (UTMB, Diagonale, TDS), Salomon Adv Skin 12. If you want a versatile skyrace vest that sits in the closet for 6 months and comes out on race day, UD Race Vest 6L.

Which vest for which distance with RunMorph

In the RunMorph training plans, the Race Vest 6L fits three specific slots. First: trail training blocks with a Sunday long run in the mountains (2 h 30 to 4 h, moderate hydration, refueling at the end of the loop). Second: skyraces and trail races from 20 to 50 km, where the vest becomes an extension of your body, with no bounce. Third: race-specific sessions at goal pace with gels on board (5 x 10 min hill repeats, for example).

For ultra plans (80 km and up), go for a 10 to 12 L vest. For 10 km and road half marathon plans, skip the vest and stick with a flask belt or a handheld. The right gear choice comes down to matching your target distance with the volume you'll actually carry on race day.

© Ultimate Direction, official photo used for editorial purposes

RunMorph verdict

Score: 8.5/10

The Race Vest 6L isn't a revolution. It refines a vest that has worked for twenty years and extends its reach a notch: six sizes, nine pockets, sternum daisy chain, 175 g. It's the most complete package in the 6 L range available in France in 2026. The trade-off is well known: more versatile than the NNormal Race Vest 5L but 1 g heavier, less capacious than the Compressport UltRun S Pack Evo 10 but with easier pocket access, less ambitious than the Salomon Adv Skin 12 but infinitely better suited to skyracing.

The controversial lesson from the trail: Ultimate Direction's XS to XL range solves a problem many runners downplay. Whether you weigh 50 kg or 90 kg, most competing vests either don't go down to XS or don't go up to XL. UD is one of the few brands covering the full spectrum of body types without compromising on cut. For the half of runners who fall outside the standard sizes, that's what settles the debate before anyone even mentions pockets or weight.

Half a point off for the missing magnetic sternum clip for bladder tubes (a feature Salomon has made standard) and for the lower compression strap that can creep on long runs. On both counts, UD has room to improve, and the next iteration (Race Vest 7.0?) will probably fix them.

Key takeaways for your training

• 175 g for 6 L: the optimal skyrace compromise. Need more, take the 10 L Compressport. Need less, take the 5 L NNormal.
• Six unisex sizes from XS to XL: the deciding argument for non-standard builds. The only vest that truly covers every body type.
• Sternum daisy chain: adjusts to the millimeter, not by notches. It eliminates bounce even with 1 kg carried up front.
• 9 pockets you can reach on the move: zero time lost at aid stations. A direct time gain on race day.
• Back bladder compatible, 2 L max. Reservoir not included: plan an extra €25 to €35 if you go beyond flasks only.