Nike Air Max Vapormax Flyknit 2 Sizing: Run Big or Small?

Vapormax Flyknit 2 Sizing, What the Feetlot Database Tells Us

The Nike Air Max Vapormax Flyknit 2 is a well-tracked running silhouette in the Feetlot database, with 30 verified owner-reported pairs feeding its size offset. The pattern is consistent: this shoe runs about half a size smaller than the Nike Air Force 1, Feetlot's reference shoe. That matches the common real-world experience, the snug Flyknit bootie and the firm Air pod platform leave little length to spare, so wearers who buy their usual size often wish they had a touch more room.

Should You Size Up or Down in Vapormax Flyknit 2?

Standard fit (most people)

Go half a size up from a true Air Force 1 size. The Flyknit upper is engineered to hug the midfoot and the sock-like collar holds the heel firmly, so the snugness comes from the wrap, not from extra length. Half a size up keeps that locked-in midfoot feel while giving your toes the splay room the standard size tends to miss.

Wide feet

Size up half a size, and treat that as the firm minimum. The Vapormax Flyknit 2 is built on a narrow, performance-oriented last, and the knit upper only stretches across the width, it does not lengthen. A confident half-size up relieves pressure across the forefoot; some wide-footed wearers prefer a full size up if the across-the-toe squeeze is the deciding factor.

Narrow feet

Half a size up still works for most narrow feet, but you can stay true to size if you like a glove-tight running fit. The knit conforms closely to a slim foot, so true-to-size avoids any heel slip without feeling cramped.

Running vs lifestyle wear

If you plan to actually run in them, half a size up is the safer call, feet swell during a session and the firm pod sole won't forgive a tight toe box. For casual, all-day lifestyle wear, true-to-size to half-up both work; pick half-up if your toes ever brush the end when you try the standard size.

How Vapormax Flyknit 2 Compares to Other Sneakers

According to Feetlot data, the Vapormax Flyknit 2 runs about half a size smaller than the Nike Air Force 1, you'd take a larger number in the Vapormax than in your AF1. It runs smaller than the Nike Air Max 270 as well, so size up relative to the 270.

It lines up almost exactly with the original Nike Air Max Vapormax Flyknit, the Nike Air Max Plus, the Nike Blazer Mid '77, and the Air Jordan 1, owners who have both in the Feetlot database tend to take the same size across all of these. The same holds against the adidas Ultraboost 4.0 and adidas NMD R1, both of which sit right alongside the Vapormax Flyknit 2.

At the other end, it runs slightly larger than the Nike Air Max Plus 3 and noticeably larger than the adidas YEEZY Boost 700, owners who have both tend to take a smaller number in the Vapormax than in the YEEZY 700.

Sign in to Feetlot and add a few of the shoes already owned to get a personal Vapormax Flyknit 2 size recommendation calibrated to a real foot.

Vapormax Flyknit 2 Size Chart (US / UK / EU)

Common Sizing Mistakes

• Buying your true Air Force 1 size. The Vapormax Flyknit 2 runs about half a size smaller, the same number that fits an AF1 often feels short in the toe.
• Expecting the Flyknit to stretch lengthwise. The knit gives a little across the width but does not add length; a short pair stays short.
• Carrying over a YEEZY Boost 700 size. The Vapormax runs larger than the 700, so copying that number leaves you swimming.
• Ignoring the firm pod sole. Unlike a foam runner, the Air pods don't compress to buy back room, if the toe is tight in the store, it stays tight.
• Sizing up a full size by default. Half a size up is right for most; a full size up is only for wide feet or hard between-size cases.

How Feetlot Computes These Numbers

Every Vapormax Flyknit 2 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 Vapormax Flyknit 2 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.

Sign in to Feetlot and add a few of the shoes already owned to get a personal Vapormax Flyknit 2 size recommendation calibrated to a real foot.