The size guide is not beside the selection.
Priority: Before the next user testObservation
The product page offers three sizes. The measurement table is further down inside the collapsed ‘More information’ section. There is no reference to it at the size selector.
Possible meaning
To compare sizes and measurements, the person must move between two places. Our assumption: help directly beside the selector shortens this path.
Recommendation
Add a brief size guide beside the selector and link to the full measurement table.
Next check
Ask a participant to choose the right size for a given need. Can they find the guide without prompting?
Limit of the conclusion: How often visitors search or abandon at this point is unknown.
