Unknown is a useful result
The local finder contains a limited set of source rows relevant to the selected records. If another age label,brand or chart family is requested,it reports unknown rather than making up a midpoint. A numerical gap between published rows is not permission to invent another labelled size.
A concrete example
The John Lewis chart lists2years at92cm height and3years at98cm. This does not create an official2.5years row at95cm or establish which size a child at that height should wear. Likewise,a range in an age label does not provide a continuous certified body-fit interval.
Keep boundaries in their field
The Polarn O. Pyret UK guide uses size-related height points such as98 and104cm. Those reference points are not measured garment lengths or a personal fit guarantee. Do not extend the chart beyond its stated source or transfer an outerwear fit tip to the selected everyday leggings.
Your next action
Open the actual current chart and product editor,or ask the seller about an unsupported request. The site stores no child measurements and provides no automatic fit decision. The calculator’s bounded stock inputs concern purchase counts only,not ages,heights or bodies.
A concrete purchase record
A request for an unlisted size should produce an unresolved field rather than an apparently precise new row. The calculator’s count limit has no connection to a chart boundary. This separation matters:the tool can handle large purchase counts while still refusing even a small unsupported change in a size-reference request.
Sources & scope
Checked November 5, 2026. Manufacturer and retailer references support the specific statements. Dated displayed prices are not final checkout quotes, performance rankings or performance testing. This shopping reference does not replace the exact product label or retailer instructions. Current received labels and independent textile/consumer/content/commerce review remain pending.
John Lewis Blue sweatshirt2years45343914 ↗
John Lewis Black two-shirt pack3years45303515 ↗
Polarn O. Pyret Black leggings2–3years85416876 ↗
John Lewis UK native clothing chart ↗
Keep reading
Does an age label guarantee the clothing will fit? ↗
Are chart dimensions measurements of the finished garment? ↗