Nike SB Blazer Low Sizing: Run Big or Small?

Nike SB Blazer Low Sizing, What the Feetlot Database Tells Us

The Nike SB Blazer Low is the skate-built version of the classic Blazer Low, and Feetlot data shows it shares the same slim last. Across 69 verified pairs in the Feetlot database, the fit pattern is steady: most wearers land on their true Nike size. The SB version adds a slightly padded tongue and collar over a flat vulcanized sole, but the length sizing tracks the standard Blazer Low almost exactly. Feetlot's offset model places it just slightly on the small side of the Nike Air Force 1, which lines up with the real-world reputation of the Blazer family running a little narrow and a little short.

Should You Size Up or Down in the Nike SB Blazer Low?

Standard fit (most people)

Stay true to size. The SB Blazer Low fits true to a standard Nike size for the majority of wearers in the Feetlot database. The suede-and-leather upper holds its shape without much give in length, so the size that fits other Nike sneakers is the safe pick here.

Wide feet

Go half a size up. The Blazer last is slim through the midfoot and toe box, so wide-footed wearers tend to feel the upper biting in at true to size. A half size up restores width room without leaving the heel sloppy, and the padded SB collar helps lock the foot in place.

Narrow feet

Stay true to size. The slim last already hugs a narrow foot well, so there is no need to size down. The padded SB tongue and collar take up a little extra volume compared with the standard Blazer Low, which works in a narrow wearer's favor.

In-between sizes

Round up rather than down. Because the toe box is on the shorter, slimmer side, wearers who fall between two sizes are more comfortable in the larger of the two. The flat vulcanized sole has very little built-in cushioning underfoot, so a hair of extra length is more forgiving than a cramped fit.

How the Nike SB Blazer Low Compares to Other Shoes

According to Feetlot data, the SB Blazer Low fits essentially the same length as the standard Nike Blazer Low and the Nike Blazer Mid '77, take the same size across all three. It also matches the Air Jordan 1 and the Air Max 270, so wearers of those can carry their size straight over.

Against the Nike Air Force 1, the SB Blazer Low runs a bit smaller, owners who have both in the Feetlot database tend to take close to a full size larger number in the SB Blazer Low than in the AF1. It also runs slightly small next to the Air Force 1 Mid, the Air Jordan 3, and the Clarks Desert Boot, where the typical wearer steps up about half a size in the Blazer. In the other direction, the SB Blazer Low runs a little large compared with the adidas YEEZY Boost 700, the Sperry Top-Sider Authentic Original, and the Timberland Earthkeepers Moc Toe Boot, expect to take roughly half a size smaller number in the Blazer than in those.

Sign in to Feetlot and add a few of the shoes already owned to get a personal Nike SB Blazer Low size recommendation calibrated to a real foot.

Nike SB Blazer Low Size Chart (US / UK / EU)

Common Sizing Mistakes

• Sizing down expecting a roomy Nike fit. Unlike the Air Force 1, the SB Blazer Low runs slightly small on a slim last, true to size is correct, and sizing down crowds the toes.
• Ignoring width. Wide feet feel the slim Blazer last most. Half a size up is the fix, not a wide-specific model.
• Rounding down between sizes. The short toe box and flat vulcanized sole punish a cramped fit, round up to the larger size instead.
• Assuming heavy break-in. The suede and leather soften but barely change in length, so do not buy small expecting it to stretch out.

How Feetlot Computes These Numbers

Every Nike SB Blazer Low sizing recommendation on Feetlot is the output of a global offset model fit to over 100,000 verified shoe records. Each shoe gets a single number, its "size offset", that captures how much its sizing drifts from the reference shoe, the Nike Air Force 1. When a Feetlot user provides their size in any tracked shoe, the model recovers their true foot baseline and recommends the matching Nike SB Blazer Low size. This works better than a simple pairwise lookup because Feetlot uses the entire wardrobe graph: even when two users share no shoes directly, the chain of users between them transmits a consistent recommendation. That is why a shoe with a modest number of direct owners still gets a stable size estimate.