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Thermodynamic Half Zip Running Top


Thermodynamic Half Zip Running Top is rated 4.4 out of 5 by 67.
  • y_2021, m_2, d_24, h_24
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Zip with a pair of Thermodynamic Leggings

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Layer up for winter runs in this temperature regulating hero. Designed in super soft thermal fabric with a half zip, thumbholes, high neck and back zip pocket for your essentials. Pairs perfectly with our thermodynamic running leggings and features reflective detailing for training in low light.
  • A thermal layer made for winter running and outdoor training
  • Warm and temperature-regulating thermal fabric
  • Slim fit with half zip
  • Zip pockets for essentials, thumbholes and a velvet trim
  • Model wears size S and is 178cm/5'10" tall
  • Style Code: SB6230
    Colour: Black

    The Fabric

    A thermal fabric of man-made fibres combining insulation with stretch, breathability and a sweat wicking finish, keeping you warm whilst perspiration free during hard core work out sessions.
    Composition: 85% Polyamide, 15% Elastane.


    Wash at 40°C (104°F) on reduced spin. Do not bleach. Do not dry clean. See care label for additional information.

    Additional Information

    Rated 4 out of 5 by from STUNNING Absolutely adore this top - its fleece lining is SO warm! I wear running or as casual and super sleek! Very expensive but worth it id say.
    Date published: 2021-01-16
    Rated 5 out of 5 by from Buy this! Bought to brave the cold, brittle, windy NYC winter weather. Does not disappoint! I bought the matching leggings too and the set is so cute. Makes me feel stylish while keeping me warm on my winter runs! The fleece lining inside is soft and warm, but not too thick. This top runs slightly large, but I kind of like the looser fit. A size down would have felt more like a second skin, which isn’t what I was looking for in this. 10/10 recommend; I love this set!
    Date published: 2021-01-15
    Rated 4 out of 5 by from Great for cold runs! I think this does a great job of regulating temperature and not being too hot for a run on a cold day. I wish I had sized down to a Medium as the arms are quite long on me, but the body fits great. I am noticing some pilling on the upper back after only 2 wears and I have not washed the item yet, not sure if this is from my pony tail (weird?) but I was disappointed by this...I am thinking this might be a fluke on my item. Still really enjoy wearing this item, but it is expensive if this is the quality that everyone experiences.
    Date published: 2021-01-04
    Rated 5 out of 5 by from Way better than I expected! I have worn this so much more than I thought I would - it really keeps you warm but also regulates your temperature really well. I've worn it for walks, and outdoor yoga and thought I would have to take it off half way through the class when I got too warm but I stayed a comfortable temperature throughout. Pockets are super useful! and the velvet stripes are fab! It's quite fitted so I went up a size to have room for layers. #teamsb
    Date published: 2021-01-03
    Rated 1 out of 5 by from Not good design unfortunately Logged on to mention that the inner arm seam catches on the zip and my sleeves now have gaping holes. I’m surprised this design flaw wasn’t picked up. Did no one run in this garment? While picking up my order from the Farnham shop I bought some hiking socks. Two months and the heels have worn through. Come on Betty - this isn’t like you!
    Date published: 2021-01-01
    Rated 5 out of 5 by from Great for winter running This is a lovely fitted, not not skin tight, top that’s perfect for running in colder temperatures. I tend to overheat on runs so was worried this might be too warm but it seems to regulate your temperature perfectly. It has two side pockets and thumb holes in the sleeves. I bought my usual size of XS and I’m a size 8.
    Date published: 2020-12-30
    Rated 3 out of 5 by from Unravelling inside arm Love the top - perfect for cold mornings but I’m having the same troubles as some others - inside arm seams are unravelling !!! I’d love to know if I can get a replacement ? It’s such a shame as I wanted to buy the purple top but won’t now as I’m afraid the same thing will happen
    Date published: 2020-12-29
    Rated 1 out of 5 by from Inside of arm seem unraveling! I am having the same problem as the below review. I love the fit and is comfy but the inside arm seems are coming undone and I have only had it for 3 weeks!
    Date published: 2020-12-24
    Rated 1 out of 5 by from Quality issue I bought the top and leggings and absolutely love them however the stitching in the arm started to come loose and the whole seam appears to be disintegrating, awaiting contact from customer services to replace urgently but no contact yet, was hoping for replacement by Xmas but looking unlikely now
    Date published: 2020-12-21
    Rated 5 out of 5 by from Great Comfortable, warm, flattering top. Great for running in winter.
    Date published: 2020-12-18
    Rated 5 out of 5 by from Stunning running top Absolutely favourite winter running top. I’m Loving this new purple too. So comfy and keeps the chill off without overheating. Great in damp weather too keeps me dry.
    Date published: 2020-12-15
    Rated 5 out of 5 by from Impressed Wore this out for a run for first time this morning. Slightly less cold today but lightly raining. This top kept me warm without getting too hot and sweaty and felt so comfortable. I have trouble finding sleeves long enough sometimes but these are perfect. Yes they are expensive for what they are but seem good quality and will hopefully last a good while. I like to wait for discounts/offers to make it less painful on my wallet!
    Date published: 2020-12-12
    Rated 5 out of 5 by from Brilliant top for running in the cold Really warm top on cold mornings going for a run and stylish too with the velvet down the arms - really nice and wear it all the time
    Date published: 2020-12-11
    Rated 5 out of 5 by from Great top for all sports The quality and fit of this top is perfect. I wear it for day to day, running, biking and find it comfortable looks and looks great. Very good quality fabric, washes well.
    Date published: 2020-12-10
    Rated 5 out of 5 by from Favorite Cold Weather Running Top! This is my favorite layering item for cold weather / outdoor activity. It is the perfect mid-layer that is technical and chic. Great for socializing outdoors on hikes and perfect for running. I love it! #teamsweatybetty
    Date published: 2020-12-08
    Rated 5 out of 5 by from Fantastic Top I absolutely love this top (although haven’t worn running yet). It is so comfortable, warm but not too warm and has great pockets. I bought with the leggings and wearing them both is the most comfortable thing ever. Fit is true to size - top isn’t tight but is nicely fitted.
    Date published: 2020-11-14
    Rated 5 out of 5 by from Cosy! Bought as a fitted layer for warmth without the bulk. Thinkig skiing or under a run gilet. Zip pockets are useful and this is so flattering!
    Date published: 2020-11-05
    Rated 5 out of 5 by from Comfy and looks great I love this. It looks great, a love the detail but most importantly it feels so comfy and warm
    Date published: 2020-08-29
    Rated 5 out of 5 by from Love love love this top Love love love this top! I bought it as part of my thermal activewear for winter/spring, I also bought the matching leggings which it works with perfectly. It feels and looks a little ‘more‘ than activewear because of the velvet stripes down the arms. The thermal material is so warm and cosy, especially with the thumb hooks. it was an essential to wear when I took my son to his football matches earlier in the year!
    Date published: 2020-07-19
    Rated 4 out of 5 by from Nice top but comes up quite small I ordered this in XS as that is my usual SB size, if not smaller. It came up small though and too restrictive to run in. Had to swap size. Love the velvety stripe down the arm
    Date published: 2020-06-12
    Rated 5 out of 5 by from Comfortable running top Very comfortable and stylish top. Good quality and fit. I wear it with the matching leggings.
    Date published: 2020-05-17
    Rated 5 out of 5 by from This is a great classic half zip This is wonderful basic half zip. The fabric is high quality and it is true to size. I wear a med. I am 5'7 and 145 lbs and it fit perfect. I highly recommend.
    Date published: 2020-05-02
    Rated 3 out of 5 by from Not the best for warmth. Not the warmest top for early morning runs, the Marino wool ones are better.
    Date published: 2020-04-20
    Rated 5 out of 5 by from Keeping warm on those early morning runs. Really soft and warm like the matching leggings. No chaffing or weird scratchy sounds that you can sometimes get with running jackets. Would highly recommend for those early morning frosty runs.
    Date published: 2020-04-14
    Rated 5 out of 5 by from 1/2 zip thermodynamic top I already have the leggings which I love ,so pleased I got the top too ,no excuses now ,I sometimes get too hot but not in this material ,fits lovely too as always sweaty Betty ,fab top.wish they did other colours
    Date published: 2020-02-26
    Rated 5 out of 5 by from Feels and looks really luxurious! This top is just beautiful. So well made, practical, really nice on. I bought it for ski-ing as another under-layer and it was perfect. Since being back in the studio, I’ve been teaming it up with SB Gary’s for Yin Yoga and it’s so nice. Washes great, this is another SB Winner!!
    Date published: 2020-02-22
    Rated 5 out of 5 by from Great mid or top layer This jumper comes in handy when it is cold outside but not wet! Very warm yet breathable and also comfortable. Would prefer if it was more reflective for the evening.
    Date published: 2020-02-21
    Rated 2 out of 5 by from Thermal running top I bought these as part of a set, with the leggings. When it arrived the leggings were missing and there was no mention of them being out of stock. It took ages for customer services to respond. Eventually sent the top back as it wasn’t that great on its own for the price. Looked a bit 80s and the material didn’t feel like great quality.
    Date published: 2020-02-21
    Rated 5 out of 5 by from Thermodynamic top Really lovely soft material great fit and keeps me warm a new favourite
    Date published: 2020-02-14
    Rated 5 out of 5 by from Like to have Very useful. Not only for running but also for a daily usage
    Date published: 2020-01-06
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