Mr Dimitrio D.
Terrible sizing
Terrible sizing
Response from Zerofit USAJul 15, 2026
Yes you need to size up like it says on the website. Sorry about that

"Mr Higashi launched the Zerofit brand in 2005, being a fitness fanatic, a single figure golfer and the owner of premium end Japanese golf hardware brand Giga he was constantly finding himself being cold while playing golf or doing more active sport such as running. Initially very technical active baselayer products were developed under the banner of ‘Smart warriors’. As the no 1 baselayer in Japan, Zerofit has only recently been made available for sale outside of japan. Zerofit successfully launched in the UK in Fall 2018 and is now launching in north america through our exclusive distribution partner ZF North America LLC, the only authorized wholesaler and on-line retailer of Zerofit in North America."
Zerofit USA (zerofitusa.com) has 508 customer reviews on Five Star Index, with an average rating of 4.8 out of 5.
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Showing 16 reviews with 3 stars · Clear filters
Mr Dimitrio D.
Terrible sizing
Response from Zerofit USAJul 15, 2026
Yes you need to size up like it says on the website. Sorry about that
David S.
I've not used it yet
Response from Zerofit USAAug 11, 2025
ok thanks
Cliff C.
Hat is terrible. I have not tried the base layer or the socks yet but I did try the beanie cap. This is an extremely bad design. The insulative layer is very very short. It should extend 2" lonter (5cm). Needs to provide more coverage for the ears and forehead. Please improve the design before the next production run.
Response from Zerofit USAMar 11, 2025
Sorry Cliff, I will relay the message
Garrett J.
I bought mittens from the Saint Paul Minnesota ice fishing expo. I bought Large but were a little tight but that was the only issue, I Reached out for an exchange and received my new ones quick. Only downside is the inside fingers of the new mittens are rough and hurt my fingers.
Response from Zerofit USADec 23, 2024
Thanks for the review, i'm sure that it will loosen up a bit
Michael S.
They weren’t as warm as the rest of your clothing line
Response from Zerofit USADec 23, 2024
Thanks for your input
Robert H.
I’ve been wearing base layers for 30 years. Your product is ultra comfortable but I don’t think it’s 5x warmer than my other base layers. But I love it.
Response from Zerofit USANov 11, 2024
thanks for your feed back, stay warm and be safe..
Tim N.
The shirt works well and helps stay cooler than other shirts. I don't care for the second skin type of fit even though I was on the border line of medium & Large and went with the large it fits and feels like panty hose.
Response from Zerofit USAJul 15, 2024
Yes, I wear it under my golf shirt, thanks for your thoughts...
Ralph D.
Looks and feels warm. But the test is Alaska in a few weeks.
Response from Zerofit USAMay 2, 2023
Love to have a 5 star, why are you only giving us 3 stars. Maybe when you get back it will go to a 5 star, thanks for your time