Dior B22 vs B30: Design Differences and Sizing Guidance

The Dior B22 and B30 offer two different approaches to a sporty sneaker. In the B22 examples shown in YIODesigner's listings, the rounded, layered sole is a prominent part of the design. The B30 examples put more visual emphasis on the large CD side detail and the lines running across the upper.

Choose the B22 if you prefer its fuller sole profile; consider the B30 if you prefer its CD-led design. For sizing, Dior currently recommends your normal size for the B30 Countdown references checked for this guide. We could not verify a current official B22 fit recommendation, so there is no evidence here for a blanket instruction to size up or down.

Sources checked: 4 October 2026. This is a source-based comparison with visual observations from the linked product listings, rather than a hands-on comfort test. Official Dior specifications describe the named Dior references; they do not independently verify the construction or fit of every third-party listing.

Dior B22 vs B30 at a glance

The visual comparison uses the B22 Black & White Mesh listing and B30 Countdown White, Grey & Black listing. Dior's material and fit information comes from its black B30 Countdown reference 3SN279ZRF_H900 and reference 3SN279ZMB_H969.

How the designs change an outfit

Look at each shoe from the side before deciding. On the linked B22, the contrasting sole sections create a fuller outline beneath the upper. On the linked B30, the side graphic draws attention across the shoe.

As a styling suggestion, compare the B22 with straight-leg denim or relaxed trousers that leave its side profile visible. Compare the B30 with a plain trouser hem if you want its side detail to be the focal point. Neither pairing makes one model universally more versatile: trouser shape and colourway change the result.

Black-and-white versions make the construction easy to compare. A blue, green or multicoloured pair can look quite different even when it belongs to the same model family. Choose the actual colourway you intend to wear, rather than judging every B22 or B30 from one photograph.

Do Dior B22 and B30 fit true to size?

For the two B30 Countdown references linked above, Dior advises ordering your normal shoe size. That is a useful manufacturer starting point for those references, rather than proof that every foot shape or seller's item will fit identically.

Dior's current UK B22 page states that B22 sneakers are no longer available. It does not provide a current fit instruction. That statement describes availability on Dior's website; it does not establish that every retailer has sold out or that the model will never return.

We therefore cannot support a universal B22 rule such as “always go one size up.” If you are choosing between sizes, confirm the exact item, its labelled size system and any item-specific measurements before ordering.

How to choose your size without guessing

1. Identify the size system. Confirm whether the seller's number means UK, EU or US sizing. A bare number is not enough to make a reliable conversion.
2. Measure both feet. Follow the foot-measurement guide, recording length and width separately.
3. Use the exact model's guidance. Check the colourway or reference, rather than copying a recommendation from a different Dior shoe.
4. Ask a specific question. Send the seller your measurements, usual shoe model and size, and any known width or heel-fit concerns.
5. Check the return process. Read the seller's policy before buying, especially when fit information is incomplete.

The YIODesigner Size & Fit Guide explains the different sizing systems. General conversion guidance should support the item-specific information, rather than replace it.

Which is more comfortable: B22 or B30?

This comparison cannot establish a comfort winner. A thicker-looking sole does not prove better cushioning, and a mesh upper does not prove that a shoe will fit a wide foot.

There is no controlled B22-versus-B30 wear test behind this article. For an everyday purchase, compare fit information, the exact materials, your intended use and the return conditions. Treat claims about all-day comfort, comparative weight or durability as unverified unless they are supported for the actual pair.

Questions before choosing

Is B30 the same as B30 Countdown?

The official pages checked for this guide use the name B30 Countdown. Retail listings may shorten the name to B30. Confirm the reference and photographs before treating differently named listings as the same version.

Should I buy the same size in B22 and B30?

The evidence checked here does not establish that both models fit identically. Confirm the size system and exact item details for each pair.

Are all B30 uppers made from the same materials?

Do not assume that. The official black Countdown references checked use technical mesh and technical fabric, but that information should stay attached to those references. Check other versions individually.

Which model should I choose?

Choose by the actual shoe's design and verified fit information. The linked B22 has a fuller sole outline; the linked B30 gives its side graphic more prominence. Neither is a universal winner.

Check the Dior collection, then compare the photographs, listed sizes and details on the individual product pages. For an unresolved sizing question, contact YIODesigner before ordering.