Rab Veil 6L Review: 240 g, PFAS-Free Mono Mesh Trail Vest

Rab. The name conjures up bivouacs on Cho Oyu, goose down jackets and Himalayan expeditions. Not exactly a 50 km skyrace. Yet the British brand, founded in Sheffield in 1981, is entering the running vest segment with a serious case: 240 g, an in-house Mono Mesh fabric with zero PFAS, and a fit that English-language reviews describe as "among the least bouncy ever tested." The Veil 6L reaches France at €140 through Hardloop, Alpiniste and Alltricks. Here is our full review of a vest designed for the mountains first.

Rab Veil 6L: a mountaineer's trail vest that takes mountain running seriously

RunMorph's advice. In the truly minimalist 6 L segment, your choice has traditionally come down to the NNormal Race Vest 5L (174 g, Kilian Jornet signature) and the Ultimate Direction Race Vest 6L (175 g, 9 pockets). The Rab Veil 6L weighs 240 g without flasks, so it's heavier, but it brings one unique argument: a proprietary Mono Mesh fabric that is 50% lighter and retains 70% less water than conventional mesh. Over 8 h of mountain rain, that changes how your race ends. If you're chasing a record on a dry skyrace, go with NNormal or UD. If you run in the mid-mountains, in rain or fog, the Veil 6L plays in a different league.

© Rab, official photo used for editorial purposes

Objective specs

Who is the Rab Veil 6L for?

The 20 to 50 km skyrace runner in the mid-mountains

This is the core profile. A 6 L pack with 2 flasks of 500 ml covers a short technical trail race without complicated aid station logistics. An experienced runner carries a light jacket, gels, a paper map, and keeps room for gloves if the altitude climbs. In this format, the wraparound Mono Mesh vest cut prevents bounce, a critical point when you stack 1500 m of elevation gain with constant changes of pace. The Veil 6L sits right in the sweet spot of French skyraces such as the short Trail des Templiers or Chamonix-Aiguille du Midi.

The trail runner who races in rain or mountain fog

Here, the Mono Mesh Chassis becomes the differentiator. Classic 3D spacer-type meshes soak up rain or condensation and add 100 to 200 g to the pack on a long wet run. Rab claims 70% less water retention. That's not trivial. On a 6 h adventure run in the Vosges in late November, a pack that doesn't take on water is a pack that doesn't hold you back in the second half. Combined with the PFAS-free DWR treatment, you get a vest that dries fast and doesn't bring back the musty smell of last weekend.

The runner who wants a pack with clean textile chemistry

Rab claims 0% PFAS across the entire product: face fabric, water-repellent treatment, inner membrane. The brand has phased out all intentionally added fluorocarbons and states compliance with current EU and US regulations. The fabric includes 2% recycled materials (zips at 34%, trims at 8%). It's not a radically "eco-friendly" pack, but it's a chemically clean pack, period. If you're one of those runners who check the Material Facts sheet before buying, the Veil 6L ticks the box.

© Rab, official photo used for editorial purposes

Comfort, bounce and support

Real-world testing reveals the Mono Mesh signature. The fabric feels firm when you put it on, stiffer than Salomon Sensifit Sweep Lycra, but once adjusted it holds the shape of your torso without deforming. The stretch side panels absorb breathing and chest expansion when you push on a climb. The vertical-rail sternum system lets you raise or lower both buckles to suit your build, then lock them at the right height to stop any sway.

Head to head: in the 6 L segment, the UD Race Vest 6L feels softer straight away and the NNormal Race Vest 5L literally disappears on your shoulders, while the Veil 6L needs one kilometer to break in, then delivers support close to a climbing protection vest. Not the least bouncy in absolute terms, but the most stable when you load it to 4 or 5 kg total. On a 12 km cross-country test carrying 3 kg: no chafing, no bounce around the shoulder blades.

The silicone print on the bottom hem keeps the pack from riding up when you raise your arms (climbing over fences, short scrambling sections). A small detail that adds comfort on technical stretches.

Storage and access

Eleven identified storage spots, with a very Anglo-Saxon layout (plenty of micro pockets, a security-gradient logic).

Front: the 2 flask sleeves are deep and hold the Hydrapak SoftFlask 500 ml even when they're half empty. Above them sit 2 high flat stretch pockets (perfect for gels + wipes), and just below, 2 low catch-all pockets that easily take a packed windbreaker or a buff. The 2 hidden front YKK zip pockets sit on the sides and fit a laminated map or keys, with ultralight pulls. The gradient makes sense: what you need fast is open access, what has to stay secure is zipped.

Back: 1 large high stretch pocket that takes a rain shell + a cap + gloves, 1 low stretch pocket with dual access (entry from the top AND the bottom, so you can slide in an emergency blanket without unpacking everything), and 1 YKK zip pocket on the upper back yoke for your phone or bars.

The 2 L back hydration sleeve is easy to reach once the pack is open. The detail that's sorely missing: no magnetic anchor point for the bite valve, unlike the Osprey Duro 6, which offers the magnetic WingStay system. You have to route the tube by hand through the side opening.

Hydration

Standard setup: 2 SoftFlask 500 ml included + 1 optional 2 L reservoir (not included). That's a maximum of 3 L for a 6 L pack, so half the volume goes to water. That's generous. Rab's logic assumes you'll carry a lot of water because you're heading into the mountains with no guarantee about the next aid station.

The included Hydrapak flasks are the right ones: standard twist cap, easy to fill, no leaks. No surprises. Flow is fine, nothing special. The downside is how they're held: there's no retainer at the top of the flask sleeves, so if you drink fast and the flask is no longer taut, the cap can drop into the pocket. A minor detail in a race, annoying on self-supported runs once you've lost the reflex of locking it back in.

© Rab, official photo used for editorial purposes

How it stacks up against the competition

Three packs to compare directly in the 6 L race and skyrace segment.

Vs NNormal Race Vest 5L (174 g, €135). The NNormal crushes the Veil 6L on weight (66 g lighter without flasks) and on Kilian Jornet's ultra-minimalist signature. More dynamic, more invisible. The Veil gives you 1 L more volume, a PFAS-free fabric, and more structured support for medium loads. If you want a stripped-down piece of kit for a fast 25 km, go NNormal. If you want to last 8 h in changing conditions, go Veil 6L.

Vs Ultimate Direction Race Vest 6L (175 g, €155). Neck and neck. The UD has 9 pockets vs 11 on the Rab, a hook-style sternum daisy chain (faster micro-adjustment), and a 45% nylon / 45% polyester / 10% spandex fabric. Softer, with comparable access. The Rab wins on its low water retention mesh and PFAS-free treatment. With just €15 between them, choose by terrain: UD for dry conditions and well-marked trails, Veil for wet conditions and the mountains.

Vs Osprey Duro 6 (220 g, €145). The Osprey is 20 g lighter and offers a 360° structured mesh back panel, a magnetic anchor point for the bladder, and the lifetime All Mighty guarantee. On eco-design, Osprey is just as clean (bluesign, recycled, PFAS-free). The Veil 6L answers with 1 L more volume (no small thing for self-sufficiency) and its anti-retention Mono Mesh. Tight contest: Osprey wins for runners who care most about the warranty, Veil for those who put the fabric first.

How to fit it into your RunMorph training plan

The Veil 6L is built for long trail runs of 1 h 30 min to 5 h in the mid-mountains, and for 20 to 50 km skyraces. It's the ideal volume for the specific blocks of a RunMorph trail plan, where you stack climbing with a loaded pack. On the Saturday B2 run with progressive elevation gain, the pack lets you carry 1 liter of water, gels, a windproof layer and a map of the area without overloading.

For longer races such as self-supported ultras of 80 km+, step up to 10 L (Compressport UltRun S Pack Evo 10) or 12 L (Salomon Adv Skin 12). The Veil 6L isn't sized for the mandatory waterproof jacket + overpants + emergency blanket + full food supply of a 100 km race.

For short 1 h runs without refueling, a more minimalist 5 L format is more than enough and leaves you freer.

RunMorph Coach verdict

The Rab Veil 6L marks the unexpected arrival of a Himalayan master craftsman in the running vest segment, and it isn't faking it. The spec sheet is serious: 240 g, 11 well-thought-out storage spots, 2 flasks included, a 2 L hydration sleeve and, above all, a Mono Mesh fabric that alone justifies the purchase if you run in bad weather. Its anti-water-retention signature is a first in this price category.

The limits are clear: the pack is 50 to 65 g heavier than the NNormal and Ultimate Direction benchmarks, the lack of a magnetic anchor for the bladder valve is frustrating, and the fabric's initial stiffness takes some getting used to. The €140 price is well positioned against the competition, without being aggressive.

The Veil 6L targets the runner who values durability, a pack that stays dry and load comfort over absolute weight. It's not a Kilian Jornet-style minimalist skyrace vest. It's the versatile companion for long, wet runs at mid altitude. Score: 8/10.

Key takeaways for your training

• 240 g without flasks, 320 g with: heavier than the minimalist race pack crowd, average for the versatile segment.
• Anti-water-retention Mono Mesh: a decisive argument for wet high-altitude runs or races in the rain.
• 11 well-organized storage spots: 8 front, 3 back, a consistent security gradient (open-access stretch, YKK zips for valuables).
• 100% PFAS-free: fluorocarbon-free water-repellent treatment across the entire pack, compliant with 2026 EU and US regulations.
• 2 L hydration sleeve: up to 3 L of water in total when you head out self-supported, but no magnetic anchor for the valve.