Seamless Active Long Sleeve T-Shirt

Seamless Active Long Sleeve, Anti Bacterial, Raglan Sleeve with slightly longer sleeves with thumb holes,  the texture of the fabric has a great soft and unrestrictive feel to it

(6 customer reviews)


Size Guide
Measurement Chart
Chest Width4648.55153.5
Full Length (shoulder to waist)72747678
Sleeve Length80818283
Sleeve Width (bicep)16171819

If you are unsure which size to order, may we suggest that you compare these product measurements to a similar garment you already own. To do this, place the garment on a flat surface and take all measurements from the outside. our measurements stated in the above chart are in centimetres unless stated otherwise.

Size Conversion Chart (Mens)
European (EU)EU 46European (EU)EU 48European (EU)EU 50European (EU)EU 52
European Collar (EU)EU 38European Collar (EU)EU 39European Collar (EU)EU 41European Collar (EU)EU 43
French Tops (FR)FR 46French Tops (FR)FR 48French Tops (FR)FR 50French Tops (FR)FR 52
International (INT)SInternational (INT)MInternational (INT)LInternational (INT)XL
Italian (IT)IT 46Italian (IT)IT 48Italian (IT)IT 50Italian (IT)IT 52
UK/US ChestUK/US 36UK/US ChestUK/US 38UK/US ChestUK/US 40UK/US ChestUK/US 42
UK/US CollarUK/US 15UK/US CollarUK/US 15.5UK/US CollarUK/US 16UK/US CollarUK/US 16.5
UK/US WaistUK/US 30UK/US WaistUK/US 32UK/US WaistUK/US 34UK/US WaistUK/US 36

Contact us
If you are not sure what size to order, why not email us on and our sales team will happily try and help you.

Returns or Exchanges
Don’t forget, with all items ordered you have 14 days to return for a refund of a size exchange, please make sure that all hand tags are attached, please try and return the item (s) in the same branded UP. clear bag.

Measuring yourself, hints and tips
To view our UP. size conversion chart and for hints and tips on measuring yourself please click here.

Super soft, durable fabric long sleeve T shirt is great for training from a gym workout, a class session, running, hiking, and also as a base layer for skiing. Its seamless design provides you with a better feel and fit as there is no chaffing. Thumb holes at the end of the sleeves for those chill morning runs, subtle panel detail on the back, chevron pattern on the chest. Slightly longer in length to ensure it does not ride up over your waistband. Great for running in, but also for any other active performance.

All of our seamless styles are created in a single and continuous knitting process which means there are no seams, therefore you are free from ‘chaffing’ providing you with a much more comfortable and better-looking clean garment.

Fit: Fits True Size, slightly longer in arms and length, made for movement, lightweight, breathable

Wear Advice: We advise to take next size up if you want a slightly looser fit.

Our delivery options may vary. View what's currently available at checkout. If the fit is not perfect, return it within 14 days, as long as it's unworn, unwashed and unaltered and the hand tag is still attached. For UK and US deliveries ONLY the totals you pay when you complete your order already includes all duties and taxes owed to local authorities, purchases outside of the UK and US may incur local taxes for which are the sole responsibility of the buyer to pay, if you refuse delivery for this reason Universal Performance will not accept responsibility under any circumstances.

Care: If and When you have to wash this garment, please think about the environment and wash cold. Max wash 30oC, Do Not Bleach, Do Not Iron, Do Not Tumble Dry, Wash with similar colours

Fabric: 70% Polyamide, 30% Polyester, Anti Bacterial 'Stays Fresh'

polygiene logo

Share your thoughts!

5 out of 5 stars

6 reviews



Let us know what you think...

6 reviews with a 5-star rating

  1. Great T Shirt

    Ash Ward

    What size did you buy? L

    Great fabric, feels amazing, managed to wear it 6 times before it needed washing. My new go-to gym top

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  2. Nathan

    What size did you buy? L

    Best gym top i own, amazing quality and comfort and doesn’t smell after multiple uses.

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  3. Great top for base layer and training in

    Gary Hopkins

    What size did you buy? M

    Nice top, good fit, great quality and after a week of going to the gym and a few outdoor runs it still does not smell !
    Sleeves are great as they are a little longer than most long sleeve tops i have bought in the past, the body is longer to which I like.

    I purchased the Grey in a M which is my normal size and it fits nice.

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  4. Great for base layer, Skiing 💯👍🏼

    Mr Paul Patterson

    What size did you buy? L

    Really good top, used mine as a base layer for skiing and it did the job. Wore it during the day beneath by suit, hung it to dry and air at the end of each day, it did have a little odour smell to it after wearing it all day, but next day it was gone, amazing, it was as good as new to wear again which I did, I wore it all week, didn’t need to wear the other tops I brought along as this one did the job.
    For skiers I would 100% recommend this garment especially.
    The Large I bought fits really well. L is my normal size. I’m a 42 inch chest, 6ft 2. Arms and body
    length is perfect. Delivery, all came time and the packing was nice. Really like this companies take on clothing.
    I would recommend this company. Well done Universal Performance !

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  5. Must have Top

    Ricky C

    What size did you buy? L

    Bought this in the grey and I love it, the colour goes with everything and the fit which was true to size for me was perfect. Great for a winter day in the gym. Wore this multiple ties as a base layer also and it never smells!

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  6. Lovely Base Layer for Outdoor Adventures

    Lewis Smart

    What size did you buy? L

    This is ideal guys! Lovely base layer. Haven’t even had to wash it yet after a hiking, exploring over the weekend, massively impressed with the quality of the material 🙂
    I have sent a picture to you guys to use if you want on your new UP.Loaded page.

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