My husband has tried various other brands of socks ,none of which
remotely resembled the L/XL I chose for him.
He finds Posey socks comfortable and true to advertised sizing.

Duracare Limb Support Sling
AS/NZS ISO 10535:2011
ARTG#402190
ISO 10535 | 6 Month Inspection
Australian StandardsAS/NZS ISO 10535:2011
ARTG Information402190