adidas NMD XR1 Primeknit Sizing: Run Big or Small?

adidas NMD XR1 Primeknit Sizing - What the Feetlot Database Tells Us

The adidas NMD XR1 Primeknit is a well-tracked Boost-soled lifestyle runner in the Feetlot database, with 104 verified pairs behind its sizing profile. The pattern is steady: the NMD XR1 sits just on the snug side of the Nike Air Force 1, Feetlot's reference shoe. Most wearers land at their true adidas size, with the one consistent exception being the sock-like Primeknit upper, which feels tight on wider feet.

According to Feetlot data, the NMD XR1 runs a hair smaller than the Air Force 1 - close enough that the practical advice for most feet is simply true to size. The runner's last and the stretchy-but-snug knit are what nudge wide-footed wearers up half a size.

Should You Size Up or Down in the adidas NMD XR1 Primeknit?

Standard fit (most people)

Stay true to size. The Boost midsole and Primeknit upper hug the foot, and a true-to-size pair gives the locked-in, sock-like feel the NMD line is built around. The knit gives a little once it warms to the foot over the first few wears, but length does not change - so do not buy short expecting it to grow.

Wide feet

Go half a size up. The Primeknit upper is a closed, sock-like knit with limited width to give, and the adidas running last is on the narrower side. Half a size up relieves pressure across the forefoot without leaving the heel sloppy.

Narrow feet

Stay true to size. The snug knit upper wraps a narrow foot well, so there is rarely a reason to size down - the Boost-soled fit already holds the heel securely.

The Primeknit upper vs mesh NMDs

The Primeknit construction is the variable that catches people. Knit uppers feel tighter out of the box than the mesh on some other NMD versions, which leads first-time buyers to size up by reflex. For most feet that is a mistake - the knit relaxes, and true to size remains the right call. The half-size-up move is specifically a wide-foot adjustment, not a default.

How the adidas NMD XR1 Primeknit Compares to Other Shoes

According to Feetlot data, the NMD XR1 Primeknit sits almost exactly where the Nike Air Force 1 and the adidas NMD R1 Primeknit do - take the same size in all three. It also lines up closely with the adidas Ultraboost 2.0 and 3.0, so an Ultraboost size carries straight over.

The NMD XR1 runs noticeably larger than the adidas YEEZY Boost 350 V2, the Nike SB Dunk Low, and the adidas YEEZY Boost 700 - owners who have both in the Feetlot database tend to take about half a size larger in those models than in the NMD XR1. It also runs a touch larger than the Air Jordan 1 and the standard mesh NMD R1, by roughly a quarter size. Against the Clarks Desert Boot, the two sit within a quarter size, so most wearers take the same size.

Sign in to Feetlot and add a few of the shoes already owned to get a personal NMD XR1 Primeknit size recommendation calibrated to a real foot.

adidas NMD XR1 Primeknit Size Chart (US / UK / EU)

Common Sizing Mistakes

• Sizing up by reflex because it is a knit. The Primeknit feels tight out of the box but relaxes - true to size is right for most feet. Reserve the half-size-up for genuinely wide feet.
• Buying short expecting the knit to stretch lengthwise. Primeknit gives a little in width as it warms to the foot, but length does not change.
• Copying a YEEZY 350 or SB Dunk size. The NMD XR1 runs about half a size larger than those, so the same number will feel long.
• Ignoring the narrow running last. Wide-footed wearers who force true to size get forefoot pressure the half-size-up would have solved.

How Feetlot Computes These Numbers

Every adidas NMD XR1 Primeknit 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 NMD XR1 Primeknit 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.