Finding the right size is only part of choosing a comfortable pair. Foot width, instep height and the shape of each model can change how a shoe fits, even when the length is correct. This guide helps you identify the fit you need and compare the right details before ordering.
Why shoe length is only the starting point
Two feet with the same length can differ in width, volume and toe shape. Shoes in the same labelled size can also fit differently because each model is built on its own shape. Start with the correct length, then check the width, instep, toe area and fit around the heel and ankle.
What does foot width mean?
Foot width is measured across the widest part of the forefoot, usually around the ball of the foot. It describes the horizontal space your foot needs inside the shoe.
Narrow feet
If the length is right but the foot has too much side-to-side space, the shoe may feel loose even after the fastening is adjusted. A narrow-fit model can provide a closer fit without adding unnecessary length.
Regular-width feet
A regular-width foot usually fits the middle range of a model's proportions. However, “regular” is not identical across brands or styles, so always compare the product measurements and fit notes.
Wide feet
A wide foot needs more room across the forefoot and toe area. Do not automatically choose a longer size simply to gain width: extra length may not solve a mismatch in shape. Look for a wider fit and compare your measurement with the internal width listed for the individual model.
What is instep height?
Instep height describes the vertical volume over the top of the midfoot. It is separate from foot width: a wide foot can have a low instep, and a narrow foot can have a high instep.
Low instep
A shoe may have excess space over the top of the foot or need significant tightening even when its length and width are suitable. Adjustable laces or straps can help fine-tune the fit, but the model still needs to match the overall foot shape.
Regular instep
A regular instep generally fits models with average volume through the midfoot. Check the fastening and product notes, as the upper material and construction can change how a shoe feels.
High instep
If the length and width are suitable but the upper feels tight across the top of the foot, the model may not offer enough instep volume. Look for shoes marked for a high instep and check whether the fastening opens widely enough for easy entry and adjustment.
How to measure both feet
- Wear the socks you plan to use with the shoes. Choose thin socks for warm-weather footwear and the thicker socks you would normally wear in winter shoes.
- Stand on a sheet of paper placed on a hard, level floor. Keep your weight on the foot being measured.
- Trace the foot while holding the pencil upright.
- Measure from the heel to the longest toe for the foot length.
- Measure across the widest part of the forefoot for the foot width.
- Repeat the process for the other foot. Use the longer and wider measurements as your starting point when comparing sizes.
Measurements narrow down the choice, but they do not replace model-specific information. Compare them with the internal length and width in the product description and read the Width fit and Instep fit notes before ordering.
Ready to find matching sizes? Enter the length and width of your larger foot in our Barefoot Shoe Finder, choose your preferred extra room and browse suitable sizes that are currently in stock.
How should well-fitting shoes feel?
When trying on a pair, check the whole fit rather than focusing on one measurement. A suitable model should:
- leave enough room for the toes;
- feel free from pressure at the sides and over the instep;
- keep the heel comfortably in place while walking;
- avoid noticeable forward or side-to-side movement of the foot;
- fasten securely without needing to be left fully open or tightened to its limit;
- feel comfortable from the first try-on.
If the length is correct but the shoe still feels tight, loose or unstable, a different model may be a better solution than a different size.
Browse barefoot shoes by fit
These collections help you create a relevant shortlist. Always confirm the measurements and fit notes on the individual product page.
Women's barefoot shoes
- Women's barefoot shoes for wide feet
- Women's barefoot shoes for narrow feet
- Women's barefoot shoes for a high instep
Men's barefoot shoes
- Men's barefoot shoes for wide feet
- Men's barefoot shoes for narrow feet
- Men's barefoot shoes for a high instep
Kids' barefoot shoes
- Kids' barefoot shoes for wide feet
- Kids' barefoot shoes for narrow feet
- Kids' barefoot shoes for a high instep
For regular width or a low or regular instep, start in the main women's, men's or kids' category and use the matching filter. Then confirm the fit on the individual product page.
What to check on a product page
- Internal length and width: compare the model's actual measurements, not only the labelled size.
- Width fit: use Narrow, Regular or Wide as a practical shortlist.
- Instep fit: check whether the model is marked Low, Regular or High.
- Fastening: laces and adjustable straps can help fine-tune the fit, but they cannot correct a fundamentally unsuitable shoe shape.
- Season and socks: thicker socks and warm linings change the space available inside a shoe. Measure with the socks you expect to wear.
- Model-specific notes: fit can vary between models from the same brand, so check each product separately.
Common questions about width and instep
Can I have wide feet and a low instep?
Yes. Width and instep height describe different parts of the foot. Use both filters and the product measurements to find a closer match.
Should I choose a larger size for a high instep?
Not automatically. A longer shoe does not necessarily provide the right volume over the instep and may leave too much space in front of the toes. First look for a model suited to a high instep, then choose the size from its measurements.
Do all models from one brand fit the same?
No. Shape and internal measurements can vary between collections and models. The information on the individual product page should take priority over a general brand impression.
What if my feet are different sizes?
Measure both feet and use the larger measurements as your starting point. Check that the chosen pair is secure on the smaller foot without restricting the larger one.
Start with accurate measurements
If you have not measured your feet yet, follow our step-by-step guide to measuring foot length and width and choosing the right barefoot shoe size. A few careful measurements make it much easier to compare models and choose a suitable fit.
If you are still unsure, send us the length and width of both feet, tell us what type of shoes you need and what footwear you normally wear. We will be happy to help you compare the size and shape of suitable models.