Ballet Flats and Mary Janes: Foundation Flats

Ballet flats and Mary Janes are the two shapes of foundation flat that a wardrobe returns to across decades. A ballet flat is a slip-on with a shallow vamp and a rounded toe; a Mary Jane is a flat or heeled shoe closed by one or more straps across the instep. If you saw a pair in a photo and you cannot tell which family it belongs to, look at the top of the foot — a strap means Mary Jane, no strap means ballet flat.

The ballet flat

The shape is descended, directly, from ballet slippers. A ballerina wears a soft leather slipper with a drawstring around the top edge; the street version keeps the shallow vamp and the rounded toe, replaces the drawstring with a bound edge, and adds a hard sole for walking. The result is a shoe with almost no structure above the sole — the wearer's foot is visible from the top of the toe box to the ankle.

Variants worth naming:

• Round-toe ballet flat — the classic. Chanel two-tone popularized the look.
• Square-toe ballet flat — a 2020s update. The toe box is flat across, not curved.
• Ballet flat with a strap — technically borrows from the Mary Jane; often called a "ballerina Mary Jane" or a "strap ballet." The strap can be an ankle strap or an instep strap.
• Mesh ballet flat — the vamp is a stretch mesh that shows the foot beneath. A recent variant tied to Alaïa.

The Mary Jane

Named for a comic strip character (Buster Brown, 1902), the Mary Jane is defined by the strap across the instep. Everything else — heel height, toe shape, material — is variable. A Mary Jane can be:

• Flat (childlike or minimalist)
• Block-heel (a common workwear cut, 40–60mm heel)
• Kitten-heel (30–50mm, more delicate)
• Platform Mary Jane (a chunky sole, often paired with a socked look)
• T-strap Mary Jane (a T-shape across the top of the foot instead of a single band)
• Double-strap Mary Jane (two horizontal bands)

The one detail that stays constant is the strap across the instep. Without it, the shoe is not a Mary Jane, no matter how similar the toe or heel.

Identifying a pair from a photo

Top-of-foot first: strap or no strap? Then toe shape: round, almond, square, pointed? Then heel: flat, block, kitten, platform? Those three checks narrow the field to a small handful of specific shoes. From there, sole detail (rubber vs leather, chunky vs slim) and material (leather, patent, satin, mesh) resolve to a specific pair.

Updated 2026-07-30