properties /identity

The shape of a shoe's toe box — bucketed into the toe-shape categories footwear retailers actually sell and filter by: round (the default), almond (a soft taper), pointed (a sharp point), square (a blunt flat front), snip (a flattened/cut point, classic on Western boots), open-toe (the whole toe box is open, e.g. a d'Orsay or open-toe bootie) and peep-toe (a small opening at the very front showing a toe or two). It is a canonical footwear 'Toe Style' filter on Zappos and Nordstrom (which list Open Toe and Peep Toe separately), statable of ALL footwear — boots, sandals, loafers and pumps all have a toe shape, so it sits on the Footwear root and is inherited by Boot and Sandal. Distinct from `strap_type` (the sandal strap CONFIGURATION — where the open-footbed straps sit — which is orthogonal: a peep-toe sandal has both a strap_type and an open toe_style), from `closure` (the fastening mechanism) and from `heel_height` (the heel tier). 'Open toe' is NOT a synonym for Sandal: a peep-toe pump or an open-toe bootie is closed-backed and closed-sided with merely an opening at the front, so open/peep are genuine toe shapes of closed shoes. It is an IDENTITY discriminator, not a buyable facet: on real catalogues toe style is a CATEGORY filter that navigates to DIFFERENT listings (a pointed-toe and a round-toe pump of the same line are distinct models, each its own SKU/reviews), never a single-product buy-box toggle — a given shoe simply IS a fixed toe shape. Grouped in the `identity` concern, so by the derived-axis rule it is NOT axis-eligible — a seller never offers one shoe across toe shapes as buy-box versions. Optional and single: a shoe has exactly one toe shape, but most athletic/casual listings omit it (absent reads as the round/default tier) and only dress/fashion listings state it; reused across all footwear.