Does the New Balance 550 Run True to Size

Yes, mostly. The 550 fits true to length for the average foot, but the toe box and collar are cut roomier than a typical low-top sneaker, so people who prefer a snug fit often go down half a size. Anyone with a narrow heel should expect some slip until the thick leather breaks in.

Why the Padded Collar Changes How "True to Size" Feels

The New Balance 550 BB550FLV Green Grey Men's Size 12 ($111.87) uses the same last as the original 1989 basketball shoe: a wide, padded collar and a thick tongue that sit higher on the ankle than a running shoe. That padding eats a small amount of interior volume without changing the actual length of the shoe, which is why the 550 measures true on a Brannock device but can feel snug at the top of the foot for the first two or three wears. Buy your normal size. Don't compensate for the collar by going up, or you'll end up with extra room at the toe that the shoe was never designed to have.

Two Sizes, One Model: What 12 and 9.5 Show Side by Side

We currently have the same BB550FLV colorway in a men's size 12 and a men's size 9.5. Lay the size charts next to each other and the proportions hold: New Balance scales the 550 last consistently across sizes rather than widening the toe box disproportionately at larger sizes, which some retro basketball reissues do. If you've worn a 9.5 in this exact model before and you're deciding between the two we have in stock, trust the number on the box. The New Balance 550 BB550FLV Green Grey Men's Size 9.5 is $94.92, priced lower than the size 12 simply because of standard size-based pricing, not condition.

The Industrial 412 Work Shoe Fits Tighter on Purpose

Don't assume 550 sizing carries over to New Balance's work boots. The New Balance Industrial 412 Black Grey Men's Size 11 Slip Resistant Work Shoe ($99.99) is built around a reinforced toe and a firmer midsole for standing on concrete, and the upper is cut closer to the foot to keep it stable inside a slip-resistant outsole. Wearers who take a size 11 in the 550 and order the same number in the 412 sometimes find it snugger, especially if they wear steel-toe-style thick socks. If you plan to wear these with heavy socks on a shift, size up half a size from your 550 number.

The 740's Unisex Sizing Is Where People Actually Get It Wrong

The New Balance 740 Purple White, listed as size 4.5 Unisex (model U740CG2, $86.45), converts to a women's size 6. That's not a fit quirk, it's just New Balance publishing the shoe on a men's unisex scale rather than the women's scale most people expect from a purple and white colorway. If you normally wear a women's 6 in New Balance running shoes, this pair is your size. If you're converting from a different brand's women's sizing, check the printed unisex number on the box rather than guessing from the colorway.

The Short Version

• New Balance 550 BB550FLV, Size 12: $111.87, true to size
• New Balance 550 BB550FLV, Size 9.5: $94.92, true to size
• New Balance Industrial 412, Size 11: $99.99, size up if wearing thick socks
• New Balance 740, Size 4.5 Unisex / Women's 6: $86.45, check the unisex number before ordering

All four are single pairs in single sizes. Match the model to how you actually wear New Balance, not to a blanket rule about the brand, and the fit will land the way it's supposed to.