Rab Men's Microlight Down Jacket Review: a reliable all‑rounder for cold and wet days

I’ve been using the Rab Microlight Down Jacket (men’s, Tempest Blue, size L) as my main cold‑weather jacket for a while now, both in the city and on hill walks. I’m not an alpinist living in a tent at 4000m, but I do a fair bit of wet, windy UK walking, some easy winter hikes, and a lot of standing around on the sidelines at kids’ sports. So I wanted something warm, light, and not too precious. This is the jacket I actually grab by default now.

My first impression when I unpacked it: it feels like proper outdoor kit, not fashion. The weight is around 460–470 g in large, which matches the specs, so it’s not ultralight, but it’s still easy to stuff into a bag. The cut in size L is what I’d call a true regular fit: room for a fleece or hoodie under it, without looking like a bin bag when worn over a T‑shirt.

I’ve used it in wind, light rain, sleet, and a couple of frosty mornings around 0°C, plus some damp 5–8°C days. I’ve also thrown it in a backpack on a couple of climbs as a belay layer. That gave me a pretty clear idea of where it shines and where it’s just okay. It’s not perfect, and there are a couple of things that bug me, but overall it does its job well.

If you’re wondering whether this is just another pricey branded puffer or a genuinely useful bit of kit, I’d say it sits in the “practical workhorse” category. Warm for its weight, decent weather resistance, some minor annoyances, and probably slightly overpriced at full RRP – but if you catch it on discount, it becomes a very solid choice.

Let’s talk money. Rab gear is rarely cheap, and the Microlight is no exception. At full retail, it sits in the mid‑to‑high range for lightweight down jackets. You’re paying for branded materials (Pertex, Nikwax‑treated down), a known outdoor brand, and a design that’s been refined over several years. In return, you get a jacket that feels like proper technical kit and not a random budget puffer from a supermarket.

Is it worth full price? Depends on what you need. If you’re actually out in foul weather, hiking, climbing, skiing, or just spending a lot of time outside in winter, I’d say the cost is justifiable. It’s warm for the weight, packs down, deals well with wind, and is versatile enough to use for both the hills and everyday life. If you mostly walk from car to office and back, it’s probably overkill and you’d be fine with something cheaper and heavier.

Where it becomes a genuinely good deal is when you find it on sale. This model is quite popular, and there are often discounts or older colours going cheaper. At 20–30% off, it starts to look like solid value: you get a proper outdoor jacket from a serious brand, without jumping into silly money territory. The 4.6/5 rating on Amazon lines up with my view: most people are happy, a few nitpicks, but no major disaster.

In terms of cost vs downsides, you’re basically paying for warmth‑to‑weight, brand reliability, and usable design, while accepting that it’s not fully waterproof and that some feathers will escape over time. If that trade‑off sounds okay to you, then the value is there. If you want something cheaper and don’t mind extra weight or bulk, there are budget synthetics that will keep you warm too – just not as light or packable as this.

Design‑wise, the Rab Microlight is pretty straightforward. Tempest Blue is a dark, slightly muted blue – easy to wear, doesn’t scream for attention, and hides dirt better than brighter colours. The quilting is horizontal with slightly different baffle sizes in some zones. It looks like a typical technical down jacket, not like a fashion puffer. If you want something flashy, this isn’t it. If you prefer to blend in but still look like you know what you’re doing outdoors, it fits that role.

The hood design is one of the better parts. It’s properly shaped, with a slightly stiffened peak so it doesn’t just flop over your eyes, and it adjusts well around the face. I can fit it over a beanie easily. It’s not huge like some ski hoods, but that’s a plus for walking and everyday use – it stays where you put it. There are drawcords for the hood and hem that are easy to grab with gloves, which is a small but important detail when it’s cold and you can’t feel your fingers.

The pockets are simple but useful: two hand pockets at a good height and a zip chest pocket. All three are big enough for a phone, gloves, or a small wallet. The hand pockets are lined with a softer fabric that feels decent on cold hands. The main zip is smooth and doesn’t snag much, even with the storm flap behind it. One thing I did notice is that there’s no internal pocket, which some people might miss for storing a phone away from the cold or keeping batteries warm.

Overall layout is clean. No giant logos, just a small Rab logo on the chest and sleeve. The cut is regular – not super slim, not boxy. I can wear it over a T‑shirt without it looking silly, and I can also layer a fleece underneath without feeling like the Michelin man. In terms of design choices, Rab clearly prioritized function and clean lines over any kind of flashy styling, and for an outdoor jacket, I think that’s the right call.

In terms of comfort, this jacket is very easy to live with. The weight is low enough that you don’t really feel it dragging on your shoulders, even after a long day. The regular fit in size L gives me enough room in the shoulders and chest to move freely, even when scrambling or reaching overhead. The zoned baffling helps a bit with mobility, but honestly, it just feels like a well‑cut puffer more than some fancy ergonomic thing.

Temperature‑wise, I’ve used it around 0–5°C with just a long‑sleeve base layer while walking at a decent pace, and I stayed comfortable without overheating. Below freezing, I usually add a light fleece underneath if I know I’ll be stopping a lot. Standing still around 0°C at a windy football pitch, it kept me warm enough, but I could feel that it’s not a huge expedition parka – which is fair, that’s not what it’s meant to be. For UK‑type winters or mild continental winters, it fits the bill well.

The hood and cuffs add a lot to comfort. The hood cinches down nicely without pressing uncomfortably on the forehead, and it moves with your head rather than blocking side vision. That’s handy on the hill and just walking around town. The internally elasticated cuffs seal out drafts without cutting into the wrists, and they fit under gloves easily. I never felt cold spots around the wrists or neck, which is usually where cheaper jackets fall short.

On the downside, breathability is good for a down jacket but not magic. If you’re hiking hard uphill at 5–8°C with this on, you’ll eventually get sweaty, especially if there’s not much wind. I’ve ended up unzipping it or taking it off on steeper climbs. It’s more comfortable as a static or low‑to‑moderate activity layer in cold weather, or as a warm layer you throw on during breaks. For what it’s designed for, I’d say comfort is one of its strong points, as long as you manage your layers sensibly.

The jacket uses Pertex Quantum for the outer shell, which is a lightweight, tightly woven nylon. In practice, that means it’s very windproof and does a good job keeping the down in. It has a DWR (water‑repellent) finish, so water beads up and rolls off in light rain or snow. I’ve worn it in drizzle and wet snow for 30–40 minutes and the fabric didn’t soak through immediately. Eventually it darkens and starts to wet out, but you’ve got a decent buffer before you feel cold.

The insulation is recycled 700‑fill down treated with Nikwax. That hydrophobic treatment is supposed to help the down keep loft when it gets damp. I didn’t soak the jacket on purpose, but I did wear it under a shell in sleety conditions and it never felt heavy or clumpy afterwards, which is a good sign. Warmth‑to‑weight feels solid: it’s not as puffy as some 800‑fill jackets, but it’s warm enough for typical UK winter temps if you’re moving or have a layer underneath.

Inside, the lining is also nylon, smooth and slightly shiny. It slides well over base layers and fleeces, so it doesn’t bunch up when you put it on. The downside of this combo – thin shell plus down – is that you do get some feather leakage. After a few weeks, I started noticing small down tufts poking through the inside and occasionally the outer. It’s not catastrophic, but it’s noticeable. One of the Amazon reviews mentioned losing feathers, and I’d back that up. It’s normal for many down jackets, but at this price I’d prefer a bit less of it.

All in all, the materials feel like proper technical outdoor kit: light, packable, and warm. Just don’t expect bombproof abrasion resistance. If you scrape it against rough rock a lot or carry heavy packs with rough straps, I can see this fabric picking up scuffs or small nicks over time. For hiking, skiing, and everyday use, it’s fine, but I wouldn’t treat it like a work jacket around sharp tools or rough surfaces.

On the durability side, after regular use, the jacket is holding up well overall. The fabric feels thin but not flimsy. I’ve brushed it against branches, rock, and rough walls, and I’ve thrown it in car boots and under backpacks. So far, no tears or serious scuffs. The Pertex outer seems tough enough for normal hiking and day‑to‑day use. That said, you can tell it’s still a lightweight fabric – I wouldn’t drag it over abrasive rock all day or use it for heavy manual work.

The zips and toggles feel decent quality. The main front zip runs smoothly and hasn’t snagged badly or split. Pocket zips are the same. The hood and hem drawcords still snap back fine and haven’t loosened. Stitching looks clean along the seams and baffles, with no loose threads showing up yet. From a build perspective, it feels like Rab knows what they’re doing – it doesn’t feel cheap or rushed.

The main durability annoyance is the down leakage over time. It’s not a flood of feathers, but I do find the odd little tuft poking through the inner lining and occasionally the outer. One of the Amazon reviewers mentioned "I’m losing feathers", and I get that. Realistically, nearly all down jackets shed a bit, especially lighter ones, but it’s still slightly frustrating when you’ve paid this kind of money. It hasn’t affected warmth so far, but it’s something you notice.

Washing and care are fairly standard: down‑safe detergent, gentle cycle or hand wash, then low heat tumble with tennis balls or similar to restore loft. I’ve done one careful wash and it came out fine, no clumps, no weird smells. If you abuse it, stuff it wet into bags for days, or never wash it, it’ll degrade like any other down jacket. Treated reasonably, I’d expect several winters of solid use. Just remember: this is a lightweight insulated jacket, not a bombproof shell, so treat it accordingly.

Performance is where this jacket earns its place. Wind protection is excellent. On exposed ridges with a decent breeze, you can really feel the Pertex Quantum doing its job – the wind doesn’t cut through, and the down traps heat well. Walking into headwinds, I never had that icy feeling on my chest that I get with some cheaper synthetic jackets. For windy hill walking and general winter use, it’s very solid.

For water resistance, it’s clearly water‑resistant, not waterproof, and that’s exactly how it behaves. Light rain, drizzle, and wet snow bead off at first, and the fabric takes a while to wet out. I’ve done 30–40 minutes in steady drizzle without feeling the down losing loft or any cold patches forming. But in proper heavy rain, you’ll eventually get wet. I always treat it as an insulating layer, not a shell – if the forecast is grim, I pack a lightweight waterproof to go over it. Used that way, it works well and dries reasonably fast afterward.

Warmth is good for the weight. I’d put it in the "active winter" category: walking, skiing, climbing, or just moving around outside. If you’re expecting to sit still for hours in freezing temps, you’ll want more insulation or extra layers. But for typical days between about ‑2°C and +8°C, it’s in a nice sweet spot. The down lofts quickly after being stuffed into a bag, and I didn’t notice any obvious cold spots around the seams.

One thing to note: because it’s fairly light and packable, it compresses well into a backpack. I’ve stuffed it into its own hood or just crammed it into a small daypack and it bounced back fine. That makes it handy as a belay jacket or an "emergency warm layer" on longer walks. The only real negative performance‑wise is the occasional feather leakage and the fact that, like any down jacket, once it gets properly soaked you’re done. As long as you understand that and manage it with a shell when needed, performance is pretty strong overall.

The Rab Microlight is a lightweight, hooded down jacket aimed at trekking, climbing, and general outdoor use. On paper, it’s a 700‑fill recycled down jacket with Pertex Quantum outer fabric, DWR coating, three zip pockets, and a regular fit. The centre back length is about 76 cm in size L, so it covers the lower back properly without being some long parka. Weight is around 466 g, which lines up with what I felt in hand and what the label says.

The outer is 100% recycled polyamide (nylon) with a DWR treatment, and the insulation is 700‑fill recycled down that’s treated with Nikwax, so it’s meant to handle a bit of moisture better than untreated down. Rab markets it as windproof and water‑resistant, not a full waterproof shell. That’s accurate: it shrugs off wind really well and holds up fine in showers, but it’s not a rain jacket. You’ll still want a shell if it’s properly hammering down.

Feature‑wise, it’s pretty standard but well thought out: adjustable hood, adjustable hem, internally elasticated cuffs, two hand pockets, one chest pocket. No gimmicks, no weird extra pockets you never use. The baffles are zoned – some are slightly narrower in key movement areas – which is meant to balance warmth and mobility. In practice, it just feels like a normal puffer that doesn’t restrict arm movement too much.

What it’s not: it’s not a heavy expedition jacket, and it’s not a fashion bomber. If you’re after a super cheap casual puffer for mild autumn days, this is overkill and too expensive. If you’re going to stand still at ‑20°C for hours, this won’t be enough on its own either. It sits nicely in the middle: active winter use, cold commutes, hill walking, ski mid‑layer, that kind of thing.