One of the most common questions before buying ASICS is simple: do they fit true to size? The short answer is that most ASICS models fit true to size for most people, but there are important differences between silhouettes. This guide breaks down the fit of each key model, the GEL-Kayano 14, GEL-1130, GEL-NYC and GEL-Venture 6, so you order the right size first time. Shop the full range in the ASICS collection at Shoe Religion.
For the wider brand story, see why ASICS became a streetwear icon. Getting the size right is the difference between a shoe you love and one you return, so it is worth two minutes.
The short answer: mostly true to size
As a general rule, ASICS lifestyle and running models fit true to size, meaning you can usually order your normal sneaker size with confidence. ASICS uses consistent sizing across much of its range, and because the shoes are running-derived, they are designed to hold the foot securely. That said, silhouette and width vary, so the details below matter, especially if you have wider or narrower feet than average.
GEL-Kayano 14 sizing
The GEL-Kayano 14 generally fits true to size, but it can run slightly narrow because it comes from ASICS' premium stability running line, which is built for a secure, supportive fit. If you have wide feet, consider going up half a size for extra room. For standard or narrow feet, your true size should be spot on. Read more in the GEL-Kayano 14 guide.
GEL-1130 sizing
The GEL-1130 has a fairly standard, neutral running fit and is true to size for the vast majority of people. It is neither notably wide nor narrow, which is part of why it is such an easy first pair. Most people stay at their true size. Details in the GEL-1130 guide.
GEL-NYC sizing
The GEL-NYC is a chunkier lifestyle silhouette and tends to fit slightly roomier than the running models. It is generally true to size, but if you prefer a snugger fit or are between sizes, going down half a size can work well. More in the GEL-NYC guide.
GEL-Venture 6 sizing
The GEL-Venture 6 fits true to size with a secure, trail-shoe fit. As with the Kayano, wider feet may want a touch more room, but standard feet should take their normal size. See the GEL-Venture 6 guide.
Quick sizing summary
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GEL-Kayano 14 - true to size, can run slightly narrow; wide feet size up half.
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GEL-1130 - true to size, standard fit; stay at your normal size.
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GEL-NYC - true to size but roomier; size down half for a snug fit.
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GEL-Venture 6 - true to size; wide feet may prefer a touch more room.
General tips for getting ASICS sizing right
A few pointers apply across the range. Measure your foot in the afternoon, when feet are at their largest, for the most accurate size. If you plan to wear thicker socks, factor that in. And remember width matters as much as length with ASICS, if you know you have wide feet, err toward the larger half size on the narrower models. If you are unsure between two sizes on a roomier model like the NYC, size down; on a narrower model like the Kayano, size up.
Because Shoe Religion offers UK delivery and clear sizing, you can order with confidence, and the model-specific guides linked above give extra detail on each silhouette.
Frequently asked questions about ASICS sizing
Do ASICS fit true to size? Yes, most ASICS models fit true to size for most people, with small variations by model, the Kayano can run narrow, the NYC roomier.
Do ASICS run small? Not generally. Most run true to size; the GEL-Kayano 14 can feel slightly narrow rather than short.
Should I size up in ASICS? Only if you have wide feet (on the Kayano or Venture) or want extra room. On the roomier GEL-NYC, some size down instead.
Are ASICS good for wide feet? The roomier GEL-NYC suits wider feet well; on narrower models like the Kayano, consider a half size up.
Where can I buy ASICS in my size? Shop the full range with UK sizing in the ASICS collection at Shoe Religion.
Related reading: GEL-Kayano 14 Guide | GEL-1130 Guide | GEL-NYC Guide | The Best ASICS Sneakers