Wrong size selected

Go through these checks in order on the product page where the size was wrong.

1. availableSizes lists the same size names as your size picker, in the same spelling.

   The widget selects the size by its name; M and Medium are different names.

   Fix: Widget attributes

2. The product is linked to the right size chart in the back-office, with the same size names.

   A product on another brand's or gender's chart gets that chart's sizes.

   Fix: Step 1: Feeds, products

3. The endBehavior is the one you want: none only shows the size, select-size also selects it.

   With none, your picker keeps the shopper's own choice.

   Fix: After a size is chosen

4. On Shopify: the size option of your variants is named like a size (Size, Taille, Größe …), or set in the snippet.

   A size option the theme cannot recognise is not selected.

   Fix: Theme snippet settings

5. Your own code listens to fmtWidgetEnd and uses recommendedSize only when the status is recommended.

   Between two sizes, recommendedSize is null.

   Fix: Widget events, status

Still stuck? Write to your FitMyType contact with the page URL and what the browser console shows.