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Black Diamond
Rhythm Long-Sleeve T-Shirt - Men's

4.833333333333333 out of 5 stars
6 Reviews


Size Chart


Why We Like The Rhythm Long-Sleeve T-Shirt

We pull on the Rhythm for rugged performance that feels just as good post-run as it does on the first mile. This crew's Nuyarn wool is an overachiever, giving us stretch for powerful arm swings, quick dry times to stave off chill and overheating, plus natural odor-fighting power to keep us fresh.


  • Technical shirt for high-output pursuits
  • Ultralight material boasts high durability and breathability
  • Raglan sleeves increase range of motion
  • Slim fit layers well while still looking good on its own
  • Item #BLDZ950
57% nylon, 43% Certified non-mulesed Australian merino wool
Claimed Weight
Manufacturer Warranty
1 year
running, skiing, snowboarding, nordic, hiking

Overall Rating

5 based on 6 ratings

Review Summary

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

What do you think about this product?


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5 out of 5 stars

January 29, 2023

So light

So comfortable and light. I use it for everything. Hanging out, running, touring, hiking. Dries quickly with minimal odor.

Kenneth K

Originally reviewed on

5 out of 5 stars

July 17, 2022

Feels amazing

First impression review here, wore this shirt on my morning run and it felt like I was almost shirtless. The wool fabric blend is equal parts soft and technical, I didn't end up sweating too much but it also surprisingly did not hold on to too much moisture (it was also very windy so that may have helped the dissipation). Overall, I am very pleased with this shirt and excited to take it on longer runs past 10 miles this summer to help mitigate the effects of the sun.

John W

Originally reviewed on

5 out of 5 stars

June 25, 2020

Amazing lightweight shirt

Love this shirt. It runs small for Black Diamond I’m 6’3” 185 lbs and usually wear a large but this I need an XL. Very breathable material and clings to the body for easy layering.


Originally reviewed on

4 out of 5 stars

May 28, 2020

Lightweight and comfortable

Very lightweight merino blend, I’ve worn it mountain biking and hiking and so far I like it very much. The fit is a little loose around the midsection but that will just allow me to eat more chocolate to fill it in


Originally reviewed on

5 out of 5 stars

May 14, 2020

Light great fitting!

This shirt is light and comfortable but also protects you on a cool day. I have worn it in a light rain and it absorbs water well and drys very quickly.


Originally reviewed on

5 out of 5 stars

March 31, 2020

Excellent running top

This is my go to shirt when the temperature is between 30-40 degrees. This is another great addition to the Black Diamond trail running lineup.

Devin V

Originally reviewed on