If you use the Swatch King app to render your variant options, the recommended way to place the Kiwi size chart link is inside Swatch King — not with Kiwi's injection selector. Because Swatch King generates the variant pickers dynamically, Kiwi's injector cannot reliably place the chart between those app-generated elements.
Recommended: set placement inside Swatch King
Open the Swatch King app and go to Product options settings.
Under Search size options, add your size option names (for example, “Size” or “Shoe Size”).
Under Size Chart Alignment, choose Inline with label (or Inline with label right to place it on the right).
Select Kiwi as the size chart app, click Save, and preview a product page to confirm.
Good to know: placement limitation
Swatch King only supports placing the size chart link inline with a variant label. It cannot position the chart between two Swatch King–rendered pickers (for example, between the Color and Size selectors), because those elements are generated by Swatch King rather than by your theme.
Alternative: use Kiwi’s injector on a theme element
If you need placement that Swatch King can’t provide, use Kiwi’s Sizing Injection Selector (Styles & Settings → General Settings → Display) to target an element that comes from your theme — not one rendered by Swatch King — then fine-tune spacing with light custom CSS if needed.
Still stuck? Contact the Kiwi support team with your product URL and theme name and we’ll help.