Nike SB Dunk vs Dunk Sizing: Do They Fit the Same?

No, the two do not fit the same, though the difference is small. A regular Nike Dunk Low runs true to size. The SB Dunk Low runs about half a size snugger, so most people should go half a size up in the SB. Narrow feet can often stay at their normal size.

The SB Dunk High is the exception to the exception. It fits like the regular Dunk, true to size. Below we explain where the extra tightness comes from, which feet it affects, and how to pick the right number if you are buying both models.

What actually makes the SB feel tighter

On paper the two shoes look almost identical, and the outsoles are close to the same length. The difference is what is stacked inside the shape.

• The tongue. SB Dunks use a thick, puffy tongue, designed to protect the top of the foot during skating. That padding takes up volume across the instep.
• The collar. The ankle opening is padded more heavily, so the heel sits in a deeper, firmer pocket.
• The insole. SB models carry a Zoom Air unit, which makes the footbed feel denser than the flatter insole in a standard Dunk.

None of these change the printed length. They change how much free space you have, and the place you notice it first is the forefoot and the little-toe side.

Where the fit differs, area by area

Toe box

The regular Dunk Low has the roomier toe box, especially in height above the toes. In the SB Dunk Low, the thick tongue and the reinforced front panel combine to feel lower. People with a wider forefoot often report pressure at the pinky toe at their normal size.

Midfoot

The SB wraps the middle of the foot more closely. Many wearers lace it looser than they would a Dunk. If you like tight lacing across the instep, the SB can feel restrictive quickly.

Heel

The heel is where the SB wins. The extra padding grips better, and walking leads to less slip. Skaters value this, and so do plenty of people who just hate heel lift.

Which size to order

This list sums up the starting points, assuming your usual Dunk Low size is a reliable true-to-size reference.

• Dunk Low to SB Dunk Low: half a size up for average and wide feet. Narrow feet may stay at the same number.
• Dunk Low to SB Dunk High: same size. Reviewers report the High Pro fits like a normal Dunk.
• SB Dunk Low to Dunk High: take the Dunk High at true to size, half a size lower than your SB.

So someone who wears a men's 9 in a Dunk Low should try a 9.5 in the SB Dunk Low and a 9 in the SB Dunk High. Our Nike Dunk sizing guide covers the general Dunk range, and it agrees with this advice.

Wide, narrow and high-volume feet

Wide feet

If your forefoot is wide, the regular Dunk Low is the easier choice. You can wear it true to size and loosen the laces if you need more room. In the SB Dunk Low, half a size up is still the minimum we would suggest, and trying them on first is smart.

Narrow feet

Narrow-footed buyers often find the SB Dunk Low fits true to size, because the tightness is about volume and forefoot width, not length. They also benefit most from the tight heel hold.

High instep

A high instep compounds the tongue effect. The padded tongue sits directly on top of it, so go up half a size and use the lacing to adjust pressure.

Special editions: SP, QS and collabs

Dunk Low SP releases are generally described as roomier in the forefoot than the standard Dunk Low, while QS versions tend to be a bit snugger. Both are variations on a shoe that already fits true to size, so they only matter if you are choosing between two sizes. SB collaborations share the base SB construction, which means the same half-size-up logic applies.

Release year and factory can move things by a few millimeters, so treat these notes as tendencies rather than guarantees.

Lacing and sock tricks that change the fit

Small adjustments can matter as much as a half size, which is useful when you are stuck with a pair you cannot return.

• Skip the top eyelet pressure. Because the SB tongue is thick, tightening the last two eyelets pushes padding into the instep. Loosen them and the shoe feels half a size bigger.
• Try a thinner sock. A skate sock with a heavy pile can use up the room you bought. Thin athletic socks restore it.
• Swap the insole carefully. A flat, thin insole gives you a little more volume than the stock Zoom Air footbed. Do this only if you know why, since it changes the shoe's feel.
• Use the heel lock. If you do go up half a size, running the top eyelets through a heel lock keeps the heel from sliding.

Skating versus walking around

If you skate, the snug fit is a feature. A tight, padded shoe gives board feel and heel hold, and skaters often prefer to stay at true size and let the padding break in. If you wear SBs as casual shoes, comfort usually wins, and half a size up makes more sense. This split explains why you will see two opposite recommendations in forums: they come from two different kinds of wearers.

How to test your size at home

When the shoes arrive, put them on with the socks you usually wear and lace them the way you normally do. Stand up, then press your thumb on the front of the shoe. You want roughly a thumb's width between the longest toe and the end. Walk around for ten minutes and pay attention to the outer edge of the little toe. If that spot already feels pinched, the pair will not get better, and you should swap for the next half size.

Break-in

The regular Dunk leather softens gradually, and most people find it comfortable after a few wears. The SB takes a little longer, because the padding is dense and the Zoom Air footbed starts firm. If a half-size-up SB feels snug at first, give it a week before you decide, but do not expect padding to shrink out of the way.

Comparing with other Nike shoes

The Dunk is a good reference point for the rest of the brand. The Air Force 1 runs about half a size bigger than a Dunk, so a men's 9 in the Dunk Low and a 9.5 in the SB Dunk Low both point to about an 8.5 in the AF1. Our Dunk vs Air Force 1 comparison goes through the maths. Against the Jordan 1, which is another true-to-size model, you can read the Dunk vs Air Jordan 1 comparison.

Nike men's size chart

Match your measured foot to a row. Foot length is the real length of the foot for that size, while CM (JP) is the number on the box, which is longer than the foot.

Example: a 26.7 cm foot is a men's US 9.5 on the chart. That is the size to try in an SB Dunk Low if your measurement puts you at a 9 in a standard Dunk. If you are not sure how to measure, see our foot measuring guide, or use the shoe size calculator.

Buying used or resale pairs

Secondhand SBs add one more variable: the padding on a worn pair has already compressed. A used SB Dunk Low can feel closer to a regular Dunk than a new pair does, so a half size up on a deadstock pair may be too much on a well-worn one. Ask the seller for the insole length in centimeters if they can measure it, and compare that with your own foot, not with the number printed on the tag.

Our recommendation

Buy the regular Dunk Low or Dunk High at your normal Nike size. For the SB Dunk Low, go up half a size unless your feet are narrow. For the SB Dunk High, buy true to size. If you plan to own both an SB Low and a regular Low, expect to own two different numbers, and do not be surprised when your pairs on the shelf do not match.

If you are between sizes with an SB Dunk Low, take the larger one. Padding compresses a little over time, but a pinched pinky toe does not heal itself.