Getting the right fit for you in your Xero Shoes
If you’ve ordered or are looking to order shoes…
Shoe fitting is more about personal preference than geometry - 3 people with identical feet, could try the same shoe, and they could have 3 different opinions about whether the shoe fits.
So, we recommend trying them on to see what you think. If you’re planning to wear your shoes with socks, try them on that way. If you want a more barefoot experience, you can try them in bare feet or with a very thin sock. You can also experiment with removing the sockliner (insole) for an even “more barefoot” experience or to help get your ideal fit.
If you ordered or are looking to order sandals…
Similarly, length is a bit of personal preference. Some people want their toes up to the front edge, some people like them slightly further back, and some people even wear their sandals so that their toes hang slightly over the front edge — it’s entirely up to you!
You can use the size guide below to get started, the CM measurements are for your foot length so you can find your UK size needed. Check out the fit advice on the product page, some of our styles may require sizing up or down - this is based on our customer feedback to help guide you to the best fit.
We recommend measuring from heel to longest toes on both feet and using the longest length when ordering for the most comfortable fit. Most people's feet aren't perfectly symmetrical, so it's very possible your one foot is slightly longer, wider, or shaped differently than your other
What size should I order?
We recommend starting with your usual size, but here are a few general guidelines to help you decide:
Wear a whole size? Stick with your regular size.
If you’ve worn our styles before:
Each product page includes specific sizing recommendations when needed. We always suggest checking those for the most accurate guidance.
| UK Size | US Size | EU Size | JP Size (CM) |
|---|---|---|---|
| 4 | 5 | 38 | 23 |
| 4.5 | 5.5 | 38.5 | 23.5 |
| 5 | 6 | 39 | 24 |
| 5.5 | 6.5 | 39.5 | 24.5 |
| 6 | 7 | 40 | 25 |
| 6.5 | 7.5 | 40.5 | 25.5 |
| 7 | 8 | 41 | 26 |
| 7.5 | 8.5 | 41.5 | 26.5 |
| 8 | 9 | 42 | 27 |
| 8.5 | 9.5 | 42.5 | 27.5 |
| 9 | 10 | 43 | 28 |
| 9.5 | 10.5 | 43.5 | 28.5 |
| 10 | 11 | 44 | 29 |
| 10.5 | 11.5 | 44.5 | 29.5 |
| 11 | 12 | 45 | 30 |
| 11.5 | 12.5 | 45.5 | 30.5 |
| 12 | 13 | 46 | 31 |
| 13 | 14 | 47 | 32 |
| 14 | 15 | 48 | 33 |
| UK Size | US Size | EU Size | JP Size (CM) |
|---|---|---|---|
| 3 | 5 | 35.5 | 22 |
| 3.5 | 5.5 | 36 | 22.5 |
| 4 | 6 | 36.5 | 23 |
| 4.5 | 6.5 | 37 | 23.5 |
| 5 | 7 | 37.5 | 24 |
| 5.5 | 7.5 | 38 | 24.5 |
| 6 | 8 | 38.5 | 25 |
| 6.5 | 8.5 | 39 | 25.5 |
| 7 | 9 | 39.5 | 26 |
| 7.5 | 9.5 | 40 | 26.5 |
| 8 | 10 | 40.5 | 27 |
| 8.5 | 10.5 | 41 | 27.5 |
| 9 | 11 | 41.5 | 28 |
| 9.5 | 11.5 | 42 | 28.5 |
| 10 | 12 | 42.5 | 29 |
| 11 | 13 | 43.5 | 30 |
| 12 | 14 | 44.5 | 31 |
| Closed Shoes - Men's US Size | Closed Shoes - Women's US Size | Open Shoes - Men's US Size | Open Shoes - Women's US Size |
|---|---|---|---|
| 6.5 | 8 | 6 | 5 |
| 7 | 8.5 | 7 | 8 |
| 7.5 | 9 | 8 | 9 |
| 8 | 9.5 | 9 | 10 |
| 8.5 | 10 | 10 | 11 |
| 9 | 10.5 | ||
| 9.5 | 11 |
| UK Size | US Size | EU Size | JP Size (CM) |
|---|---|---|---|
| Kids 5 | 6 | 22 | 13.5 |
| Kids 6 | 7 | 23 | 14.5 |
| Kids 7 | 8 | 24 | 15 |
| Kids 8 | 9 | 25 | 15.5 |
| Kids 9 | 10 | 27 | 16 |
| Kids 10 | 11 | 28 | 16.5 |
| Kids 11 | 12 | 30 | 17 |
| Kids 12 | 13 | 31 | 18 |
| Kids 13 | 1 | 32 | 19 |
| Youth 1 | 2 | 33 | 20 |
| Youth 2 | 3 | 34 | 21 |
| Youth 3 | 4 | 36 | 22 |
Overall rating: 4.75 / 5 from 8 reviews.
Review topics: [].
"These shoes are quite reminiscent of the Prio to me, which were my introduction to Xero before the Wynns became my daily do-it-all wear for comfort. But compared to the Prio's 5.5mm soles, the 9mm soles in the HFS II are better suited for hard concrete pavement (which I really need hurrying to the train station each morning). OG stylish look with wide toe boxes for urban applications, and I'm a fan of the clean white and grey colour scheme."
"So far so good. Shoes is comfortable and I've enjoyed some slightly longer runs. Be warned though - despite the website advising the fit is true to size, I've taken advice from Reddit and gone a half size up and don't regret it (probably could have gone a full size up). Reckon the fit would have been too small otherwise."
"Use these regularly for CrossFit and strength training, and they're excellent. Sturdy and stable base of support, good for lifting as well as explosive/plyometric movements. Highly recommended!"
"I’ve been a long time wearer of Xero and had the HFS1 until the some wore through. These are a great evolution though come up more true to size. My only criticism? If you add the extra lace hole to facilitate a proper running lace up method then you need to fit longer laces. The supplied laces are way too short to allow the correct use of that extra hole!"
"I have walked four miles a day in these for the last few weeks and they look like new. Very pleased"
"I have two,othet pairs in blue and black. I wanted to get a pair in white."
"A lot more support / protection from road surface and rocks compared to vivos without compromising on the toe space. Probably the shoe I should have started with, very comfortable for running."
"Good advice for women to buy men's shoe for extra width. Disappointed that for the price, the laces had a defect."
