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Rhythm Tee - Men's

Item# AP7522400002LRG1
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The Rhythm Tee is the world's lightest technical merino wool shirt, featuring NuYarn fabric, which dries five times faster, breathes better and has 35% more stretch than standard merino, making the Rhythm unstoppable on the move.


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Cannot be used with oversized items or skis

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Built for ultimate freedom and mobility, the Rhythm tee features NuYarn merino wool technology making it significantly lighter than any other wool shirt on the market, while increasing performance at the same time. The Rhythms NuYarn fabric dries five times faster than standard merino, while providing 35% more stretch. This means the Rhythm Tee is the ultimate high output, breathable layer or trail running shirt.

  • Features NuYarn Wool, a superior merino wool fabric that's lighter, stronger and dries faster
  • Machine washable
  • Responsible Wool Standard (RWS) Certified
  • Fit: Slim
  • Size: S-XL

Black Diamond Rhythm Tee: The World's Lightest Technical Merino Wool Shirt

Tech Specs

Tech Specs

Materials :   Wool Nylon Blend Single Jersey (57% Nylon, 43% Merino Wool, 95 gsm)
Weight :   69 g
Country of Origin :   Vietnam





Rhythm Tee - Men's is rated 4.1 out of 5 by 17.
Rated 4 out of 5 by from Good, but careful about color and drying This WAS my favorite shirt (purchased branded version thru Skratch Labs) The Good: -Great athletic fit for the tall and lanky (6'6" 190lb sz LG) -Dries quickly, doesn't stink after 4 days in the wilderness -Works great as base layer, MTB jersey, or t-shirt -Feels lightweight, breathes very well, packs small Cons -Ruined in one accidental run through the drier (now fits like a halter top). I know, its merino and I should have been more careful, but its still a con if you toss your gear in the wash together with cotton clothes. BE CAREFUL. -Color significantly affects performance. Black will overheat quickly in the sun due to the near-instant heat exchange to the skin. The warm grey color is PERFECT, but sadly I ruined it (see above) and BD is out of stock (BD, please restock. It seems like you always discontinue apparel after 1 season). -A little scratchy. In initial donning, you might wonder if this thing is going to itch all day. For me, it settles and stays comfortable, but I've had much softer merino layers.
Date published: 2020-09-03
Rated 4 out of 5 by from super lightweight best to wear when it is 90 plus/high humidity. can wash with anything
Date published: 2020-08-10
Rated 3 out of 5 by from Good, not great. Initial impressions are that this is a little more scratchy than other merino-leading brands. I do really like the stretchy fabric, but am bummed that so much of this wool shirt is made of synthetic materials. I am a reliable size medium and this fit fine.
Date published: 2020-05-28
Rated 5 out of 5 by from This runs smaller I will have to order the size medium in this shirt.
Date published: 2020-04-02
Rated 4 out of 5 by from Light and Beautiful Really high standard merino and synthetic tee. Use it for trail running sessions and daily running, in a moderate high temperature (18-25 celsius). It looks quite good compared with standard ultralight synthetic tee or any running shirts. But I found there is a mistake in this website. It states that the weight of this tee is 69g. However, i got two size S, where weights are around 90g. This is a big difference as 69g usually is weights of some kind of ultralight synthetic baselayers (uch as patagonia, OR, Rab or haglofs one etc) or some pro running vests; while 90g is only the performance tee in size S.
Date published: 2020-04-01
Rated 5 out of 5 by from Great piece! I own a couple of these shirts. Extremely mobile, with moisture wicking and odor resistant properties. Very comfy! Great piece of kit! Thanks, Black Diamond
Date published: 2019-12-29
Rated 4 out of 5 by from Great fit, but gets hot quick The fit a feel of the Rhythm Tee is superb. I wear a small, and I appreciated how well the shirt fit. Performance on the trail or mountain is best between 30-60 degrees, beyond that and the shirt feels hot and stuffy. Wool is wool, and I feel a shirt meant to perform well in high temperatures needs to be made of synthetic materials that will breath easier. If this fit of this shirt were transferred to another (and less expensive) shirt made for high output activity, that would be a great addition to the BD lineup.
Date published: 2019-11-25
Rated 5 out of 5 by from No brainer functionality One piece I never have to concern myself with. Always part of my adventure kit, breathes well in the summer and flash dries, keeps me cozy when the temp drops. I need three more.
Date published: 2019-11-22
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