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Alt HB Hooded Jacket - Men's

4.142857142857143 out of 5 stars
14 Reviews
Current price: $116.97 Original price: $179.95
35% off


Size Chart


Why We Like The Alt HB Hooded Jacket

Getting out there when there's a nip in the air can be tricky: a jacket seems necessary so we aren't cold at the get-go, but we want to avoid overheating as our heart rate rises. To combat both, the Alt HB Hooded Jacket blends breathability and body temperature management in a way we didn't think possible. Rather than a stuffy layer of synthetic insulation, the Alt HB utilizes innovative Octayarn lining that pulls excess heat away from the body, leaving us at the just-right temperature for the conditions. Normally, CFM ratings are reserved for windproof garments, but this jacket is so breathable, Marmot tested its air-permeance and determined a rating of 50 CFM, breathable as can be. Between this airflow and the thermal-regulating lining, the Alt HB Hooded Jacket is the most ideal layer for warmth without hindrance on high-output activities.


  • Activity-oriented jacket keeps athletes comfortable at top power
  • Highly breathable nylon ripstop crafted with recycled materials
  • Thermal-regulating Octayarn lining insulates without overheating
  • PFC-free water-repellent coating keeps light precipitation at bay
  • Gusseted underarms and articulated elbows allow free range of motion
  • Fixed hood, adjustable hem, and thumbhole cuffs add further coverage
  • Item #MARZ9L6
Responsible Collection
100% recycled nylon, PFC-free water-repellent coating
Octayarn lining
Center Back Length
[external] 2 zippered hand, [internal] 1 zippered chest
Claimed Weight
hiking, casual
Manufacturer Warranty

Overall Rating

4 based on 14 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 3 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 9 reviews

What do you think about this product?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

December 30, 2023

Great hoody, well-made, and perfectly warm

[This review was collected as part of a promotion.] Great hoody that's lightly insulated. It's perfect for chill days and evenings of fall/winter California. The DWR is not that repellent, but the insulation is like artificial fur facing outward, which I imagine is water repellent by its very design. This fur is on top of a 3D mesh, which is by design moisture wicking. As the result, we get the unicorn fabric: one that is actually BOTH waterproof (water resistant?) AND breathable at the same time. I only tested it in medium rainfall for maybe 10-15 minutes combined exposure to rain, and didn't get wet under it. It's also super light, and fits me well (5'10", 155 lbs, size S). I like the feeling of the "fur" inside the pockets, very cozy!


Originally reviewed on

5 out of 5 stars

December 23, 2023

Like wearing nothing that keeps you warm

[This review was collected as part of a promotion.] One of those jackets that you did not know you wanted until you had it. Light, warm, and cool due to breathability it’s a versatile layer for activities and cool offices


Originally reviewed on

4 out of 5 stars

December 21, 2023

Little small

[This review was collected as part of a promotion.] Nice but Runs a little small. XL fits like a LT instead


Originally reviewed on

5 out of 5 stars

December 15, 2023

Excellent Light Weight Jacket

[This review was collected as part of a promotion.] Much to love about this jacket. Love the cut and fit, not too slim, room enough to have a decent sized base layer under, but tight enough for good articulated movement without feeling encumbered. The color is fantastic, love the limelight. It has a jersey like mesh facing the interior of the fabric, with a more traditional fleece backing as insulation. Believe they have the more fleece like material facing in to help with moisture management. I find the material comfortable on the skin. There is instant warmth when putting on this jacket, and I love the feel of it. Nice hand pockets, and a useful interior chest pocket. Believe they could choose an outer material that has stretch and is more abrasion resistant, but the cut is so good I don’t feel like I need the stretch, and I don’t personally plan to use packs while using this. Plan to use this for day hikes, biking, and camping, as well as post surfing.

Steven Surf

Originally reviewed on

2 out of 5 stars

November 27, 2023

So so material

Material is not really what you want, not very soft.

Mistah Lee

Originally reviewed on

5 out of 5 stars

June 12, 2023

Absolutely Marmot!

[This review was collected as part of a promotion.] Light, bright and repells the rain! Well made, great color and good fit. Yet another great example of Marmot design and construction

Originally reviewed on

2 out of 5 stars

April 19, 2023

Durability is the arckilles hill

Short version Almost perfect, it is light and warm. However, the face fabrics might show clear sign of wear, similar to another review posted prior. Long version This jacket uses a relatively new material from octa, which can be thought as a direct competition against the polartec Alpha direct fabric. Currently there are 2 main variations of Octa Loft on the market: the one with high density of relatively short fiber (used by this jacket), and another version where the fiber is more fluffy and more loosely woven, more similar to alpha direct. The first version can also be found in tons of active insulation or close to skin base layer. The second version is also used by slightly warmer jacket. This fabric achieves roughly the same CLO value as polartec Alpha direct: around 0.38. Both are breathable and suitable for active insulation. The main differences are: it is usually only fluffy on one side, allowing manufactures to put some protective fabrics to completely cover the insulation part, and it is hydrophilic instead hydrophobic for Alpha direct. The main trend in cottage companies is to use these fabrics as stand alone pieces to achieve incredible weight saving, warm to weight ratio, breathability, while implicitly asking users to be more knowledgable and more careful when using the piece. Big name brands that need to consider general population and all their warranty claims tend to put a stronger face fabrics (often wind resistant but highly breathable with CFM >=50) on top of it to achieve a mid-point between functionality and durability. Marmot has used a very similar recipe with a more minimalistic design, and I got mine at a very steep discount. It is incredibly warm at its weight, it is breathable, it is light (considering it has a full length center zipper and 2 pockets). It is a perfect piece for aerobic activity in the mountain, while also not too technical for my taste to wear in city. The only downside for this jacket (or at least the one I got), as mentioned before, is that it has an extremely weak face fabric, prone to show very clear pattern of use. It might look like it is technically some ripstop fabric…? But the entire grid “reinforcement” thread going horizontal and vertical can be easily pulled out of the fabrics on the slightly snag if that area of the fabric already shows some sign of abrasion. So it is not functionally rip stopping, it merely has the grid looking pattern. And ironically it is actually the first thread to go when you caught something ……. Also, I generally took extremely good care of all the gear I use. I haven’t seen such obvious pattern of abrasion even on my alpha direct fabric hoody from a cottage manufacture, where the entire insulation fabric is completely exposed to the element without any face fabrics and I have worn that heavily for the past 2 years going through mountaineering trip in the winter and long backpacking trip in summer under 35lb pack …. Yet, I got some worse wear pattern from this jacket within a month in winter time with only one snowshoe trip. I will have to baby care this jacket when I am hiking. I definitely wont take it to anywhere near rock, so the bouldering and rock climbing community might need to think twice before purchasing this piece. All in all, a truly almost fantastic piece, except for the durability of the face fabric.

user image

Originally reviewed on

5 out of 5 stars

March 29, 2023


I like too much I bought 2 colors. And 2 extra gift


Originally reviewed on

5 out of 5 stars

March 6, 2023

Incredible layer

[This review was collected as part of a promotion.] This jacket is a great midlayer for cool conditions. I've worn it hiking in the mid 30's by itself and felt very comfortable. The hood is a perfect fit and tucks in nicely under my rain jacket when it starts to pour. On its own, the outer layer will repel a a pretty good sprinkle, though I'm sure the DWR will wear off eventually. I'm 6'1", 175 lbs and the Medium fits perfectly and weighs 10.4 oz. A great, versatile layer.


Originally reviewed on

2 out of 5 stars

February 13, 2023

Easily worn (not in a good way)

[This review was collected as part of a promotion.] Hard to say if I would recommend this jacket or not. I purchased one in October. Very comfortable and has just the right amount of warmth. The reason I am at a debate is the fact that it is now February, and I noticed some pilling on it. The pilling has a distinct pattern.... being caused by my car's seatbelt! Am I expected to take my jacket off anytime I am going to ride in a car?


Originally reviewed on