Sweaty Betty
Athlete Seamless Gym Crew Neck Top
£55
Customers say:
Fits a little small()Product code: T129135S
About this style
This seamless, long-sleeved top by Sweaty Betty is a versatile and practical choice for every workout. This crew-neck style is cut in a regular fit from lightweight, high-stretch fabric that wicks away moisture to keep you cool and comfortable. Mesh detailing adds extra ventilation, while thumbhole cuffs hold the sleeves in place and keep your wrists warm.
Curated By

Details & care
Details & care
Fit and style
•
Fitted
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Unlined
Composition
90% polyamide, 10% elastane
Care
Machine wash according to instructions on care label
Delivery, collection & returns
Delivery, collection & returns
Delivery
Standard
Free over £60, or £3.99
Returns
UK returns
Free. Returns can only be arranged via postal options. Exclusions apply Full delivery and collection information Our returns policy
Exclusions apply
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Reviews (101)
Incredibly itchy sleeves
Originally posted on sweatybetty.com
Seamless? 🤣 This is not the case. There's more overlooked seams than even necessary in the thumb hole/cuff area which I seem to have had a reaction to (likely the polyacrylamide fabric plus rough overlock).
Helpful?
Replied
22 April 2025
Hi there, A massive thank you for taking time out of your day to leave us feedback. We’re so sorry to hear that our Athlete Seamless Gym Long Sleeves fabric wasn't as you’d hoped. We’re listening, learning and constantly striving to be better. We will make sure to pass this onto the relevant team. Should you require any further assistance, our Customer Care Team would be more than happy to help. Best wishes, Team SB
Good for running
Originally posted on sweatybetty.com
Yes, I recommend this
Lovely colour- great running top. Thicker material than I expected but will be good for rainy/winter runs
Helpful?
Strange sizing
No, I don't recommend this
The top is made of a thick fabric, which is nice. It’s a good length but the sizing is off. I sized up and ordered two. The blue was fine but the pink was too clingy and felt uncomfortable. I returned it for a navy one, which is fine.
Helpful?
Long sleeve athlete top
Originally posted on sweatybetty.com
I bought a medium as this is my usual size in this top, I have one in navy and one in white. This one is very tight and not stretchy so maybe should’ve gone with the large.
Helpful?
Lovely fit
Originally posted on sweatybetty.com
Lovely fabric and very comfortable whilst running.
Helpful?
Love these tops.
Originally posted on sweatybetty.com
Yes, I recommend this
Love these tops. Great fit. Great fabric. Perfect layer piece without adding bulk. This colour brings joy. Size as normal. I’m size 10 and bought S
Helpful?
Great layering long sleeved top
Originally posted on sweatybetty.com
Yes, I recommend this
I wasn't intending to buy this top but as I'd purchased the midnight cherry purple After Class Sweatshirt and matching Ultra Sculpt leggings in the sale, I thought this top would provide a good layering contrast in the colder months, and sure enough it looks great. I followed the advice on some of the reviews and sized up to a medium (I'm 5'3" and a size 8/10 - 34D) and it's about as snug as I need it to be. Overall, I'm pleased with this top and think I'll get a lot of wear out of it.
Helpful?
Great top for many activities
Originally posted on sweatybetty.com
Nice quality Long sleeves Washed well Doesn’t ride up , stays put !
Helpful?
Not worth it for the price
Originally posted on sweatybetty.com
No, I don't recommend this
Got it in size XS and it’s terrible, it shows sweat stains, has really long sleeves, bunches up when running and is just not good at all for the price
Helpful?
Stunning color
Originally posted on sweatybetty.com
Yes, I recommend this
So glad this new style is available. The old bamboo long sleeves had some stitching in the front that made your chest look weird. This too looks amazing. The color is bold and beautiful!
Helpful?
Gorgeous top! Pink is lovely. Super slim fit!
Originally posted on sweatybetty.com
Beautiful top, but just to be clear it is meant to be a figure hugging slim fit, and that’s exactly how it is. True to size, I’m an 8 and I wear the XS. Looks lovely, had loads of compliments. So much better than any of the competition for running gear, and washes beautifully. I love wearing it and have just bought another two in tidal blue and navy.
Helpful?
Gorgeous colour and v comfy
Originally posted on sweatybetty.com
Yes, I recommend this
I've had this in several colours for many years so was pleased to see in stores again in a gorgeous blue! It's as comfy as ever and looks fab.
Helpful?
Good top for outdoor runs.
Originally posted on sweatybetty.com
Yes, I recommend this
Bought this top for my runs. Love the colour . Arm length is abit long for me but will still keep the top. Bought in the sale so good value. Would nt have paid full price for it. Washed well.
Helpful?
Great too
Originally posted on sweatybetty.com
Yes, I recommend this
Lovely colour, warm, lovely material and colour is fabulous.
Helpful?
Super hard working & pretty athlete's top
Originally posted on sweatybetty.com
Yes, I recommend this
Really practical & pretty coloured athletic top with wow factor.
Helpful?
Under garment
Originally posted on sweatybetty.com
Yes, I recommend this
Excellent fit. Keeps me warm and very comfortable to wear. So pleased with this item.
Helpful?
Poor Fit
The fit was all wrong on me. The small was too tight and the medium was baggy in the body.
Helpful?
Lovely long-sleeved gym top
Originally posted on sweatybetty.com
Lovely long-sleeved top for the gym, great fit but decided I wasn't keen on the colour so returned for refund.
Helpful?
2025
Originally posted on sweatybetty.com
Yes, I recommend this
Very comfortable long sleeved top. Washes well and always looks great. Sweaty Betty clothing is created to last and out performs other brands by a mile.
Helpful?
Comes up small
Originally posted on sweatybetty.com
Quality top which is a lovely colour and was looking forward to wearing it until I tried it on. I’m a size 8 and usually opt for XS in Athlete seamless vest which fits perfectly. Opted for S for the long sleeve hoping for a slightly looser fit but this comes up more like an XS. It’s very clingy and not the fit I was hoping for. If you want a looser fit size up a couple of sizes in this top. Left feeling disappointed and will now probably just use as a base layer for running.
Helpful?
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