Black Diamond Alpine Start Hoody Review: A Windshell That Actually Breathes

What the Alpine Start Does Best

Windshells exist because wind chill, not temperature, is usually what makes a ridge or a belay ledge miserable. The Alpine Start is built for the moment you are moving hard and the wind is your problem: it takes the sting out of a stiff breeze while the Schoeller fabric still passes a controlled amount of air, so your sweat has somewhere to go instead of pooling on your back. That combination is the entire reason the jacket exists, and it is why you can keep it on while you climb rather than stopping every ten minutes to strip layers.

The second thing it does well is disappear. At 200 g and roughly grapefruit-sized when packed, there is no calculation involved in bringing it — it goes into the pack lid or the top of the main compartment and you forget about it until the moment you need it. That matters more than it sounds, because the best just-in-case layer is the one you actually carry; a bulkier shell often stays in the car.

Finally, it stays comfortable in positions where other windshells do not. The stretch-woven fabric moves with you when you reach for a hold or swing a tool, the slim cut sits flat under a harness, and the under-helmet hood stays put instead of ballooning and blocking your view. On a windy alpine start that means you can stay sealed up from the trailhead to the summit ridge without fighting the jacket.

Where It Falls Short: The Trade-Offs

Rain is the obvious limit. The DWR is a finish, not a barrier: it beads mist and light rain long enough to get you to shelter, and then it gives up. There is no membrane and no waterproof coating, so once the face fabric wets out in sustained rain, water crosses it, the fabric clings cold against your skin, and the jacket stops doing the one thing you bought it for — blocking wind. In a wet climate, this is a layer you carry in addition to a shell, never instead of one.

The same thinness that makes it pack small makes it a wear item. Brush against granite all season, chimney with it on, or scrape down a gully and the fabric will abrade, with the DWR going first, before the fabric itself. The shoulders and forearms are usually where water starts soaking in first. Treat it as a consumable you will replace after a few seasons of hard use, not a jacket you pass down.

Fit is the third trade-off, and it cuts both ways. The slim cut is exactly what makes it comfortable under a harness, but it also caps how much you can wear underneath: a thick fleece or a puffy binds at the shoulders and pulls the hem up when you reach overhead. There is also nothing to adjust. The elastic cuffs and hem seal drafts without any hardware, which is great for reliability, but it means you cannot cinch anything tighter when the wind really howls. And because the fabric breathes, it stores very little warmth once you stop, so the moment you reach a belay the puffy has to come out straight away.

Decoding the Specs: Fabric, Weight, and Fit

The one spec that explains this jacket is the fabric construction. Most windshells get their wind resistance from a coating or a laminated membrane, which also blocks water vapor — that is the plastic-bag effect. The Alpine Start uses a tightly woven Schoeller fabric instead, engineered to pass a controlled amount of air. The meaningful figure for this class of fabric is air permeability rather than hydrostatic head: a fully windproof shell lets essentially no air through, and this one is deliberately built to sit above that, trading a little wind resistance for a lot of comfort on the uphill.

The 200 g figure matters because it defines the category. This is a windshirt, not a shell or a softshell — it sits in the same weight class as the layer you stuff into a pack lid and forget, and it compresses to about the size of a grapefruit. That same number is why the fabric feels thin in your hands, which is the honest trade: light and packable on one side, durability on the other.

The trim details all serve one goal — no hardware. Elastic cuffs and an elastic hem seal out drafts with no velcro, no drawcords, and no cord locks to snag on rock or a rack, and nothing to break. The hood is cut to sit under a climbing helmet, which is precisely why it stays slim instead of ballooning; a hood designed to fit over a helmet is a different pattern, and this is not that. The body is deliberately close-fitting, sized to be worn over a baselayer rather than over a midlayer.

The DWR deserves its own note, because it is a finish and not a permanent property. It works until abrasion, dirt, and body oils degrade it, at which point water stops beading and the fabric starts absorbing. Restoring it is routine maintenance rather than a warranty issue, which is why the care routine below matters more here than it would on a hardshell.

Who Should Buy It — and Who Should Skip It

Buy it if you move fast in the mountains and generate your own heat: alpine rock climbers, ridge scramblers, fast hikers, trail runners, and spring ski tourers. It is also the ideal third layer for someone who already owns a puffy for warmth and a hardshell for rain, and wants something for the many days that are neither — windy and dry, cold enough that you want a layer, warm enough that a shell would cook you.

Skip it if rain is a realistic part of your day, because a windshell that wets out is the wrong primary layer in a wet climate. Skip it if you want one jacket that does everything; this is a specialist, and a light softshell or a hardshell will cover more ground, if less well. Skip it if you run cold and think of a windshell as a warm layer, since it removes wind chill and adds almost no insulation. And skip it if you want something to hand down, because a thin air-permeable fabric is a consumable.

The honest value question is whether you will notice the difference. If you already own a fully windproof nylon windshell and have never felt clammy in it, this upgrade buys comfort you have not been missing. If your current windshell leaves your back damp after a thousand feet of climbing, the Alpine Start is the fix — and that is the difference between a layer you wear and a layer you take off.

How It Compares to the Closest Alternatives

Against a classic coated nylon windshell — the archetypal plastic bag with a zipper — the Alpine Start costs a little more weight and money in exchange for breathability and stretch. The plain nylon shell is closer to fully windproof and packs slightly smaller, and for a short dash on a mild day it is perfectly adequate. Wear it with a pack on a long climb, though, and you get the clammy back. The Alpine Start is the version of that layer you can leave on all day.

Against the ultralight windshirt category, the difference is comfort rather than weight. Those shells are typically crisp, rustly fabric with very little give; they sit stiffly under a harness and a rack, and their hoods are usually cut for casual use rather than to fit under a helmet. The Alpine Start gives up a little packability in return for fabric that moves with your shoulders, a hood that stays put under a helmet, and far less rustle.

Against a light softshell, the softshell wins on durability and warmth and loses on weight and packability. A softshell shrugs off brush and rock, holds a little heat, and does not need babying; it also weighs more, fills more of the pack, and breathes noticeably less when you are working hard. If your days involve bushwhacking or dragging a rough pack through tight terrain, the softshell is the better tool.

Against a hardshell there is no contest in rain. A hardshell is waterproof and the Alpine Start is not, and in sustained rain the windshell loses outright. The right reading is that these are not competitors at all. For a mixed mountain day, the sensible stack is a puffy for warmth, a hardshell for rain, and the Alpine Start as the layer you wear while you are actually moving — which is most of the time.

Real-World Use and Care Tips

The single most useful habit with this jacket is putting it on early. Because it breathes, there is no penalty for wearing it while you climb, so the move is to pull it on at the last sheltered spot before an exposed ridge or a windy col — before you get cold, not after. That is what separates it from a fully windproof shell, where every transition becomes a stop-and-swap ritual that costs you both heat and time.

Layer it directly over a synthetic baselayer for uphill effort, and add a light fleece only when you stop or the wind goes beyond a stiff breeze. Choose your size around the thickest midlayer you realistically plan to wear underneath, because the cut is close and the shoulders are where it binds first. With a helmet, put the hood on first and then the helmet; the hood is cut to sit under a helmet, and hauling it over the top defeats the design and leaves it flapping.

For care: wash it cold with a technical wash and never with fabric softener or dryer sheets, because softener residue coats the fibers and degrades both the DWR and the air permeability you paid for. Tumble dry on low or warm to reactivate the DWR — the heat is what restores the beading, so do not just line dry it if beading has faded. Repeat a spray-on DWR treatment when water still soaks in after a wash. Keep it away from rough rock and sharp edges where you can, and store it clean, dry, and loosely packed rather than compressed for months at a time.