UK field note · checked 7 September 2026
Trainer sizing: labels and measurements
Skip the universal conversion chart. Start with the exact selected variant and listing evidence.
Identify the exact variant
A listing may contain several styles, batches or size systems. Record the variant you selected before comparing any label.
Use centimetres where provided
Measure the foot as the listing instructs and compare that value with its own chart. Insole length and recommended foot length are not automatically interchangeable.
Treat familiar labels cautiously
A UK, EU or seller-specific number does not guarantee the same fit between products. If there is no useful measurement chart, the fit remains uncertain.