Fit preference

Fit preference is the shopper's taste: some like a shirt close to the body, some like room. It is about the person, where the fit scale is about the product. "This jacket runs large" is the item; "I like my jackets loose" is the preference. A size finder needs both, and two shoppers with the same chest can rightly get different sizes because of it.

In Ruban Size

Shoppers set it in Find my size under "Fit I like: Snug, Regular, Loose", and the answer changes at once. What the choice does depends on the chart:

• Garment measurements: it picks how much ease is added. For a top, 8.9 cm snug, 11.6 cm regular and 16.7 cm loose, from the middle of the Vogue, Butterick and McCall's ease allowances.
• Body measurements: the ranges already hold the brand's room, so the measurement moves by only half the gap to a regular fit. For a top, 1.35 cm down for snug and 2.55 cm up for loose.
• A tie between two sizes: the larger size wins, and the smaller one for snug, except on kids' charts.

Try it on the men's T-shirts template below: a 98 cm chest and an 84 cm waist give "Your size: M". Switch to Snug and it still says M, but adds that you are between S and M.

Rings, helmets and belts offer no choice: a ring or a helmet fits or it doesn't, and a belt adjusts with its holes. Merchants can turn the choice off chart by chart with Shoppers choose their fit (snug, regular, loose). The preference is kept on the shopper's device with their measurements. How Find my size works has the rest of the steps.