I’ve been testing the new Black Diamond First Light Stretch Hoody since early October and after a half dozen trips into the alpine with it I’m ready to share my thoughts.

TLDR Version: This is an outstanding addition to the “light puffy” market and I’m stoked to have this in my current rotation of outdoor clothes.

How I Tested: Two ice climbing trips to Mount Willard, an ice climbing trip into Tuckerman Ravine, two Mount Washington attempts (one successful summit, one bail at Lion Head due to very poor visibility and extreme winds higher)

Before I get into my personal opinions on this jacket let’s look at the manufacturer description and specifications:

Manufacturer Description:

The perfect layer for backcountry rock walls, big alpine faces, and frigid weekend ski tours, the Black Diamond First Light Stretch Hoody is the ultimate in dynamic four-season insulation that breathes efficiently and stretches with your every movement. The jacket packed with migration-resistant Primaloft Gold Active, maintaining breathability during even the most intense high-output pursuits. The 20D nylon ripstop face fabric and stretch liner resists weather and encourages full range of motion, while remaining incredibly durable through rugged talus, brushy approaches and daily use. Additional features include an adjustable, climbing-helmet-compatible hood, a low-profile, single-adjust hem and a highly packable design that stuffs into the internal stretch mesh pocket and clips onto your harness, all your needs are covered. Fit and overall design has been entirely overhauled for 2023.

PRODUCT FEATURES

• Migration-resistant PrimaLoft® Gold Active Insulation
• 20D nylon ripstop face fabric with PFC-free DWR Technology
• Lightweight, stretch lining for added breathability
• Mapped insulation throughout body, shoulders, and arms
• Adjustable, climbing-helmet-compatible hood with drawcord adjustment
• Underarm gussets for added range of motion
• Low-profile, single-adjust hem
• Stows in internal left hand pocket with carabiner clip loop
• Two concealed-zip hand pockets
• Primary fabric is Bluesign approved
• ECO Label Status
• Fit: Regular
• Claimed Weight: 14.29 ounces

Personal Opinions:

The “light puffy” has become a staple in my winter outdoor clothing scheme. My biggest requirements in a quality piece are; high warmth to weight ratio, high breathability, high packability, decent water resistance, wind proof, well fitting. The Black Diamond First Light Stretch Hoody checks all the boxes!

High Warmth to Weight Ratio: Black Diamond uses mapped PrimaLoft® Gold Active Insulation. Primaloft® Gold is one of the best synthetic insulators available with a CLO value of 0.92, which is roughly equivalent to the warmth of 500 or 550 fill-power down and achieves 98% thermal efficiency (and still retains heat if it gets wet, unlike down). The nylon shell fabric is lightweight and soft to the touch, allowing for the whole jacket to weight less than a pound. For a synthetic insulated hooded jacket this is quite impressive, so I give this a 5/5 in the warmth to weight ration category!

High Breathability: The biggest test of the breathability of this jacket came yesterday as I was breaking trail in thigh deep new snow from tree line to the summit cone on Mount Washington. Temps were 6 degrees Fahrenheit (-14 Celcius), winds were around 40 mph (64 Kph), and the wind chill was about -23 Fahrenheit (-30 Celcius). The uphill battle was slow going and a bit exhausting. I needed more than my base layers and soft shell jacket to stay comfortable but I was working pretty hard. I pulled this on over my soft shell and kept working uphill thinking I’d likely start to overheat soon and need to take it off. That didn’t happen and I reached the summit with it still on. So it is definitely breathable. I didn’t take it off until I was back to tree line and out of the wind for the quick walk back to the trailhead.

High Packability: While similar down jackets can pack smaller I prefer the extra insurance of synthetic for my light puffy jackets and only have one big down parka these days that is always in my pack for the most arctic of trips. Despite being a synthetic hooded jacket I am impressed with the Diamond First Light Stretch Hoody ability to get small. Without much coaching it will pack into it’s own zipper right side hand pocket at takes up just a little more space then your standard wide mouth Nalgene water bottle.

Decent Water Resistance: Black Diamond uses pretty standard PFC-free DWR Technology to give this jacket some water resistance. I was only exposed to a little dripping water on a warmish ascent of Hitchcock Gully earlier this year and as expected any drops that hit me just rolled off the fabric. Since it is a synthetic and not down I’m less concerned about how water resistant a light synthetic puffy is as I will still pack a hardshell if there is a significant chance of liquid precipitation on my trip.

Wind Proof: 100% this jacket is indeed windproof as I tested it in those 40+mph conditions I mentioned above. All I can really add here is I am impressed with how windproof the jacket seems while being so breathable at the same time. Must be the 20 denier fabric that Black Diamond used for the shell fabric, it just strikes the right balance in this regard.

Well Fitting: Ok I kind of saved the best for last here. I love the way this jacket fits and movies. Black Diamond says it’s a “regular” fit and while that means it isn’t supposed to fit like your tapered skinny jeans I don’t find the fit to be too bulky at all either. For my 5’9″ 185 pound frame the large fits over my skin layers and soft shell jacket perfectly. The length is perfect for tucking in under my climbing harness, and the stretchy panels under the arms keep in tucked in while I’m ice climbing and raising my hands far above my head often. The insulated hood is comfortable and well fitting with or without a climbing helmet on thanks to the drawcord adjustment. The fit is somehow technical while casual as I’ve found myself grabbing this jacket for everyday where and not just saving it for mountain missions.

Summary: The synthetic light weight hooded jacket is one of my favorite categories of gear to test. You can find many of my reviews of this style of jacket over the years on my review page. If your “light puffy” is ready for replacement or upgrade, or you have yet to add the “light puffy” to your outdoor wardrobe, I highly suggest you check the Black Diamond First Light Hooded Jacket out!

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See you in the mountains,

Northeast Alpine Start

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