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Black Diamond
Rhythm T-Shirt - Men's

4 out of 5 stars
29 Reviews
Current price: $63.00 Original price: $90.00
30% off


Size Chart


Why We Like The Rhythm T-Shirt

The performance nylon wool blend found in the Black Diamond Rhythm T-Shirt helps you perform to the best of your ability thanks to its plentiful stretch, natural odor resistance, and impressive temperature control. As an added bonus the minimal branding and classic crew neck design fits seamlessly into most wardrobes.


  • Performance tee for hitting the trail, the crag, or lounging
  • Wool blend moves with you, controls temperature, and wicks moisture
  • Merino wool is naturally odor resistant for use day after day
  • Crew neck design is well suited for aggressive outdoor activities
  • Item #BLD00XH
57% nylon, 43% merino wool
Center Back Length
[medium] 26in
natural attribute of merino wool
Claimed Weight
Manufacturer Warranty
1 year

Overall Rating

4 based on 29 ratings

Review Summary

1 Stars - 2 reviews
2 Stars - 2 reviews
3 Stars - 4 reviews
4 Stars - 7 reviews
5 Stars - 14 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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

February 15, 2024

The Shirt I Needed

I've put it through the wringer
Size Bought:

Crazy light with just a bit of warmth, this is the perfect shirt for high output activity when there is a slight chill in the air. And it is very quick to dry.

Gregory B
5 out of 5 stars

January 31, 2024

Love it. My go-to running shirt

These aren't as soft to the touch as other wool shirts I own, they feel a little scratchy at first, which I was concerned about initially. After a minute of wearing it, it became my favorite shirt. I now own 3. SUPER light and airy. Very comfortable. Perhaps a little short in the torso, but that's a very minor issue.

Andreas U

Originally reviewed on

1 out of 5 stars

November 18, 2022

Absolute garbage durability, sizing off

I've used it once or twice and have initial impressions
Size Bought:
5' 10"

I haven't even worn this yet, just put it through the wash on hand wash cycle no spin. Threads have already pulled and i suspect this will be a massive hole after the first wear. Also runs way small. I'm 5'10 180 and the large is too small. I'm usually medium or large in most things. Don't waste your money

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Jacob S
2 out of 5 stars

July 21, 2022

Disappointing quality for the price

I've used it several times
Size Bought:
6' 3"

I don't often review products, but felt compelled to review this one by the high price point and number of reviews that are inconsistent with my experience. Pros: - It's a nice looking shirt! The fit is on point (slim bit not too tight) and the black color is weaved with gray for an interesting depth. - Dries relatively quickly. Cons: - The biggest issue is the degree to which this shirt stretches when wet. By the end of a summer run, it's basically a dress, stretching probably four inches (granted, I do sweat quite a bit). it For a shirt billed towards high-output activity, this is a dealbreaker for me. - This shirt is surprisingly warm for how light it is. I have used it on three summer runs in temps starting around 60 degrees in the early morning, heating up to around 80 degrees by the end of the run. Each time I found myself overheating and wishing I had worn a Patagonia Capilene Cool shirt. Obviously this warmth-to-weight ratio could be a positive, depending on your anticipated use. - After one long run using a hydration vest, the shirt is pilling dramatically. I have used it while climbing and had no issues, so I think it would work well for less cardio-intensive activities or as a base layer (where the surprising warmth would be a benefit). But for running, there are much better options out there at lower price points.

Robert F
5 out of 5 stars

July 17, 2022

The best run/outdoor/work shirt I own

This is an excellent running shirt, base layer, and even just a casual shirt to go around town in. It is quite breathable, lightweight, and retains little to no odor, making it perfect for going from morning trail runs, to the office. The fabric blend is super soft on the skin and stretches phenomenally, allowing it to move with your body. I consistently wear this shirt day in and day out, under down jackets, running shells and vests, and it performs phenomenally, retaining its shape despite the fabric's stretch. This is an outstanding base layer.

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Joseph O

Originally reviewed on

4 out of 5 stars

July 17, 2022

Super comfortable fabric, handles moisture very well. Bit of boxy cut.

Daniel G

Originally reviewed on

5 out of 5 stars

July 17, 2022

Excellent Trail Running / Running Shirt

Lightest performance tee I own. Feels great during activity and I love the stretch. UPDATE: I have two of these t-shirts and, for whatever reason, the nickel (gray) color is noticeably shorter on me than the blue version. I'm 6'1 175lbs and have the Medium size in both. Just a fair warning. Still a great tech tee!

James F

Originally reviewed on

5 out of 5 stars

July 17, 2022

Great active layer

Comfortable, wicks well, doesn't smell, and stretches well.

Sean L

Originally reviewed on

5 out of 5 stars

April 10, 2021

Love the fit and the Fabric

I've used it once or twice and have initial impressions
Size Bought:
6' 1"

As someone with a long torso, I love the fit on this shirt. I often find shirts from other companies (and especially the trew nuyarn shirts) a tad short, so this is a goldilocks fit for me. I'm 6'1" 175 with a 32 inseam for reference. Fabric is a very nice soft texture, has a light visual pattern and subtle logo - little steep at $75. but next time they are on sale I'm snagging another for sure! More colors would be awesome!

Terran S
5 out of 5 stars

October 27, 2020

The most comfortable shirt ever?

This shirt has to be worn to be appreciated, very comfortable and moves with you effortlessly. Definitely a next level Tee shirt


Originally reviewed on