Sizes are stock, not a dropdown
A size chart alone does not tell a customer whether the piece is available. When size is a variant, availability is real.
- Each size and colour combination holds its own stock, so sold-out sizes are visibly unavailable.
- Price and MRP can differ per variant, which covers a larger size or a premium colour.
- When stock reaches zero the variant stops selling, and a low-stock threshold warns you first.