New Balance 991 Sizing: Do They Run Big, Small or True to Size?

The New Balance 991 runs true to size. If you wear a US 9 in most New Balance, Nike or Adidas shoes, a 9 is where you start here too. What surprises people is not the length but the feel: the 991 has a structured, firm forefoot that can seem tight for the first few wears, which is why some shoppers think it runs small.

Our advice is simple. Take your usual size, go half a size down only if your feet are narrow and the heel slips, and consider half a size up (or a different model altogether) if your feet are very wide.

The short version by foot type

• Average feet: true to size.
• Narrow feet: true to size, or half a size down if you want a sleeker, more locked-in feel.
• Slightly wide feet: true to size. Expect some forefoot pressure at first, and it usually eases as the upper breaks in.
• Very wide feet: half a size up helps, but it adds length you may not want. A roomier New Balance such as the 993 or 990 may suit you better than forcing the 991.

Why the 991 feels tighter than its size

The 991 belongs to New Balance's Made in UK family, a premium line built with suede, mesh and leather panels over a layered structure. That construction gives the shoe a more rigid, tailored shape than a soft-mesh runner, so the upper does not give way as easily at the toes.

The length is fine. If you press your thumb at the front, you will find a normal amount of space. What you feel is the structured wrap across the ball of the foot, particularly in a brand new pair. Reviewers describe the upper softening and stretching slightly with wear, so a snug first impression is not a reason to return a pair that is otherwise the right length.

How the 991 compares with other New Balance models

New Balance does not size every model the same, so converting from a pair you already own is the most reliable shortcut.

• 990 series: many people take half a size down in the 990 line, because it is roomier. In the 991 they return to their full size. Our 990 sizing guide covers the details.
• 992: the 992 runs big and most people size down half a size. The 991 does not, so expect to be a half size larger in the 991. See the 992 guide.
• 993: the forefoot is roomier. That makes it the better choice for wide feet.
• 9060: the 9060 has a more forgiving toe box, so a 9060 wearer with wide feet may feel the 991 is a notch tighter.
• 327: the 327 is slim but soft. The 991 is more structured. Both fit close, and both are true to size.
• 550 and 530: these run roomy and long, so half a size down is common in both. The 991 is not in that group.

Version 1 versus version 2

The 991v2 is the newer pair, with updated materials and some cushioning changes. Most wearers who have tried both report the same size in each, with a minor difference in how snug the forefoot feels. A few people with narrow feet find the v2 more suitable for half a size down. Treat that as an option, not a rule.

If you buy a collaboration, expect small variations. Some limited colorways use different leathers or suedes, and the stiffness of those materials changes how tight the toe box feels on day one. Collabs generally fit like standard pairs, so there is rarely a reason to change the size you would pick for a regular colorway. If the retailer lists a specific note, follow it.

Width: what to know before ordering

Most people buy the 991 in standard D width for men or B for women. New Balance sells many of its Made in UK models in additional widths, but availability varies by colorway and retailer, so check the product page for a width selector before you assume one exists. Our shoe width chart explains what each letter means.

If you are between D and 2E, true to size is typically workable because the leather and suede relax. If you need a 2E or 4E and cannot find it, move to a roomier New Balance model rather than buying the 991 a size too long. A shoe that is too long moves your foot forward in the shoe and makes the heel slip worse.

Men's and women's conversion

New Balance women's sizes run 1.5 larger than men's. If you wear a women's 8.5, look at a men's 7. Women's width is B at standard, while men's is D, so women with wider feet sometimes do better in the men's version. For more conversions, our men's to women's guide covers the rule.

New Balance size chart

The charts below show how US, UK and EU line up for New Balance, plus the real foot length that each size fits. The CM (JP) column is the label printed on the box, which sits above your actual foot length.

If your foot measures 27.1 cm, that is a men's US 10. Read across for the UK and EU numbers. If you land between two sizes, the 991's firm forefoot is a reason to take the larger one when your foot is wide. Use our foot measuring guide for an accurate reading.

Sizing by use: walking, standing and everyday wear

The 991 is a lifestyle shoe with a cushioned midsole, and plenty of people wear it for long days on their feet. For that kind of use, comfort over hours matters more than a snug first try-on. Feet swell as the day goes on, so a shoe that feels perfect at nine in the morning can feel tight by dinner. That is one more reason not to size down unless your heel genuinely lifts.

If you plan to wear it for walking tours or travel days, try the shoe on in the afternoon. Wear the socks you would normally wear on a long day, and stand for a few minutes. If the forefoot feels pinched in that test, your foot is probably on the wider side and the half size up or a roomier model deserves a look.

For actual running, the 991 is not the shoe. Our running shoe fit guide explains the extra thumb-width of space you need for training.

A simple way to test the fit at home

1. Lace the shoe fully and stand with your weight evenly on both feet.
2. Check that you can wiggle your toes, with roughly a thumb's width of space beyond the longest toe.
3. Walk a few steps and check the heel. A small amount of lift is normal in a new pair, but if your heel slides out, try a different lacing pattern before sizing down.
4. Feel the sides of the forefoot. Mild snugness is expected. Sharp pressure or numbness is not.

If the pair passes this test, keep it. If not, take the half size that fixes the specific problem, not both at once.

Break-in, materials and comfort

Suede, mesh and leather are the main ingredients. Suede softens, mesh gives a little and leather panels shape to the foot over time. Most of that happens in the first few outings. The 991 does not require a long break-in, but plan for a few wears before the forefoot feels natural.

If the pressure sits at a particular point, wear thicker socks for an hour at home and see if it eases. Do not stretch a shoe aggressively, because forcing leather can leave permanent creases. The goal is a slightly relaxed fit, not a different size.

Mistakes to avoid

• Copying the 990 rule. Half a size down is common in the 990 and rarely right in the 991.
• Going a half size up for the first-wear tightness. It leaves the heel loose and the shoe too long once it softens.
• Assuming all Made in UK models fit alike. Treat each model as its own shape.

Our recommendation

Order your true size. Reserve half a size down for narrow feet that slip at the heel, and half a size up for very wide feet, preferably after trying a roomier model first. For the bigger picture, read our New Balance sizing guide or use the shoe size calculator to turn your measurements into a size.