Size Guide

4.6
Rated 4.6 out of 5 stars
Based on 141 reviews
Total 5 star reviews: 111 Total 4 star reviews: 15 Total 3 star reviews: 10 Total 2 star reviews: 3 Total 1 star reviews: 2
SizingRated 0.5 on a scale of minus 2 to 2
89%would recommend this product
Slide 1 selected
141 reviews
  • B
    brandon
    Reviewing
    ORIGIN RTX® brrr° COOLING TRAINING CREW SS Origin Raptor Blackout Camo / 2XL
    I recommend this product
    Rated 5 out of 5 stars
    4 minutes ago
    5 Stars

    The quality is phenomenal!

  • D
    DF
    Verified Buyer
    Reviewing
    ORIGIN RTX® brrr° COOLING TRAINING CREW SS Patriot Blue / LG
    I recommend this product
    What is your body type? Athletic
    What is your height? 6' 0"
    How old are you? 35-44
    What is your weight? 226-250
    Rated 5 out of 5 stars
    2 days ago
    Sizing shift from 1st edition, but still great

    I bought 2 of the original RTX training tops (size XL) a few years back (2023). Great products. After the BRRR series came out though, I noticed a shift up in sizing. The first BRRR I bought in 2025 was an XL as this is what I wear in the OG version as well as Core-T, etc, but the XL was kinda huge on me. Not so bad that I returned it, but definitely a baggier fit. Not just in torso but through chest too, and the sleeves go almost to my elbows. I just bought another BRRR in a L, which is a waaay better fit and more on par with how my OG XLs fit. To be fair, I have lost about an inch off my gut, but my chest/shoulders measurements are basically the same, and the fit of the L is much cleaner, not baggy, but plenty of freedom of motion.

    SizingRated 1.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    Yesterday

    Hi DF,

    Thanks for taking the time to share your detailed feedback on the ORIGIN RTX® brrr° COOLING TRAINING CREW SS! We're glad to hear you're continuing to find great value in the RTX line and that the cooling performance is working well for you.

    We sincerely appreciate you bringing up the sizing comparison between the original RTX and the brrr° series, especially the specific details about how the XL in the newer version runs larger through the chest, torso, and sleeve length compared to your original XLs from 2023. Your input gives us valuable insight into how our sizing specifications may have shifted between product iterations.

    Thank you for your honest feedback about both the continued product quality that's working well and the specific sizing consideration that led you to size down to the L for a cleaner, more familiar fit. This detailed input on how sizing translates across different versions of similar products helps us see how our specifications are performing against established sizing expectations.

    • Origin
  • AB
    Aaron B.
    Verified Buyer
    Reviewing
    ORIGIN RTX® brrr° COOLING TRAINING CREW SS Admiral / LG
    I recommend this product
    What is your body type? Normal
    What is your height? 6' 0"
    How old are you? 45-54
    What is your weight? 176-200
    Rated 5 out of 5 stars
    1 week ago
    Wonderful athletic shirt

    Purchased for doing yoga. Best athletic shirt ever!

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    6 days ago

    That's awesome to hear the RTX® brrr° COOLING TRAINING CREW SS has become your best athletic shirt ever, Aaron!

    Yoga sessions can really put athletic wear to the test, so knowing this crew is delivering that level of comfort and performance on the mat is fantastic feedback. That cooling technology is designed to keep you comfortable during intense workouts, and it sounds like it's doing exactly what it's supposed to do.

    Thanks for taking the time to share your experience and for the excellent 5-star review!

    • Origin
  • LS
    Luke S.
    Verified Buyer
    Reviewing
    ORIGIN RTX® brrr° COOLING TRAINING CREW SS Sage / LG
    I recommend this product
    What is your body type? Built
    What is your height? 5' 11"
    How old are you? 45-54
    What is your weight? 201-225
    Rated 4 out of 5 stars
    2 weeks ago
    Love the shirt, but they run smaller then you’d think.

    Shirt is awesome, but I got a large and should’ve ordered XL.

    SizingRated -1.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    2 weeks ago

    Hi Luke,

    Thanks for taking the time to share your feedback on the ORIGIN RTX® brrr° COOLING TRAINING CREW SS and for recognizing the shirt quality! We're glad to hear the shirt itself is working well for you.

    We sincerely appreciate you bringing up the sizing feedback, especially the specific details about the large running smaller than expected. Your input gives us valuable insight into how our sizing is translating compared to customer expectations and whether our current size specifications are delivering the fit that would make the overall experience work seamlessly for you.

    Thank you for your honest feedback about both the shirt performance that's hitting the mark and the specific sizing consideration that would enhance the overall experience. This kind of detailed input about how our sizing is running helps us understand exactly how customers are experiencing the fit relative to their expectations!

    • Origin
  • C
    Christine
    Reviewing
    ORIGIN RTX® brrr° COOLING TRAINING CREW SS Oxblood / MD
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    5 Stars

    Good quality

    OU Profile picture for Origin USA
    Origin USA
    1 week ago

    It is wonderful to hear that the construction and feel of this training crew have hit the mark for you. We believe that professional grade gear should be built to last and we are glad you can feel the difference that American manufacturing makes. Thank you for taking the time to leave this review! - Origin