Men's Black Sleeveless Muscle Tee

Paolo is a Banking Analyst from sunny San Diego. He's 5'6" 125 pounds and wears our size XS Shirt + XS Short

Men's Black Sleeveless Muscle Tee

3 reviews Write a review
RUNYON533-S

Men’s Unisex Sleeveless Muscle Tee Features

  • Unisex Sizing -- XXS is Women's Small and Small is Men's Small
  • Curved bottom hem design
  • Side Reflectives, helps you get noticed.
  • Great for Running, Hiking, Gym, Workout, Fitness and the Outdoors
  • 100% performance moisture-wicking fabric technology
  • Lightweight, breathable and silky-smooth
  • Odor-resistant fabric technology
  • UPF 30 Sun Protection
  • 6 oz Double Knit Quick-Dry Poly
  • Made In USA Performance Textile
  • Designed, Cut & Sewed in the USA

Designed To Perform

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Details

Built for running, hiking, gym workouts and warm-weather training, the Runyon Men's Unisex Sleeveless Performance Muscle Tee is a lightweight athletic shirt designed for freedom of movement. Handcrafted in Los Angeles from Made in USA performance textile, this sleeveless workout shirt combines moisture-wicking, quick-dry and odor-resistant technology to help keep you cool and comfortable during high-output activities.

The lightweight, breathable and silky-smooth 6 oz double-knit performance fabric provides comfortable airflow while UPF 30 sun protection adds coverage for outdoor training. The sleeveless design allows unrestricted movement through the shoulders and arms, making this performance muscle tee ideal for running, trail running, hiking, gym workouts, weightlifting, fitness and outdoor adventures.

A curved bottom hem creates a modern athletic silhouette, while reflective side details add visibility in low-light conditions. From morning runs and trail workouts to lifting sessions at the gym, this versatile sleeveless performance shirt is built to move wherever your training takes you.

Proudly designed, cut and sewn in the USA using American-made performance textile. This style features unisex sizing — XXS is comparable to a Women's Small, while Small is comparable to a Men's Small/Women's Large.

Size Chart

Men's Unisex Sleeveless Muscle Tee Size Chart

Unisex SizeXXSXSSMMLXL2X
Women's SizeSMM/LL/XLXLXL/2X2X
Chest17"18"19"20"21"22.5"23"
Length25"26.5”27.5”28.5”29.5”27.5”28.5”
Bottom Hem17.5"18.5"19"20.5"21.5"22.5"23.5"
Shoulders14"14.5"15"16"16"17"17"
Measurements are in inches of the apparel flat on a table (1) Chest is pit to pit (2) Length is top of collar to bottom of shirt, (3) Bottom Hem is across the bottom (4) Shoulders is edge to edge.
Features
Activities & Sports
Running, Hiking, Trail Running, Gym, Workout, Crossfit, Yoga, Pilates, Kayaking
Care Instructions
Wash Cold, No Bleach, No Softener, Tumble Dry Low Heat
Color Description
Black
Country of Origin
Made In USA
Fabric
6 oz Double Knit Quick-Dry Poly
Fabric Content
100% Polyester
Features
  • Breathable
  • Lightweight
  • Moisture-Wicking
  • Performance
  • Polyester
  • Quick-Dry
  • Reflective
  • Sleeveless
  • SPF
  • Sun
  • Sun Protection
  • UPF
  • UV Protection
  • Warm Weather
Model
Paolo - XS Shirt + XS Short
PMS Color
19-4205TP - Black
Release Date
May 8, 2023
UPF Rating
UPF 30
Brand
Runyon
GTIN
0653891080554
MPN
0653891080554
Happy Trails

Customer reviews

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Recommendation for purchase

100%

Based on 3 recommendations
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Jeremy from Artesia, CA
Jeremy from Artesia, CA
Verified purchase
03/12/2026
Product variant:  Size: S; Color/Style: Amazing Blue
Comment
Runyon not only makes a great product, but they also donate to charity with each purchase and source their materials from the USA. They go the extra mile by including a personalized note and a thoughtful message about their mission, which adds a warm, genuine touch and makes you feel great about supporting them. I’ll definitely be ordering from them again
Deane from New Hampshire
Deane from New Hampshire
Verified purchase
08/01/2023
Product variant:  Size: XS; Color/Style: Navy Blue
Comment
I’m not normally a muscle shirt guy but the humidity in the northeast has been brutal this summer so desperate times call for desperate measures!

That said I was pleasantly surprised by this muscle tee. It is clear that this was designed to be a function muscle shirt and opposed to a t-shirt with the sleeves cut off. The lightweight fabric wicks moisture away like magic. This shirt has definitely earned a spot in my summer rotation!
Tony -- Columbus, Ohio
Tony -- Columbus, Ohio
Verified purchase
07/29/2023
Product variant:  Size: M; Color/Style: Hot Pink
Comment
I'm 52 and my last marathon was 13 years ago so didn't have any running shirts. I wanted one made in the USA and found Runyon. Then, my training partner, my 18 year old daughter Cecelia wanted us to be in matching hot pink and I needed sleeveless. Runyon answered the call. Found this great sleeveless hot pink running shirt and it was great. Light weight, wicking and as the kids say, "dope" color.
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