This looks like a fun piece of equipment. I’m imagining being forced to stand on tip-toes, keeping the tendons and muscles taut, whilst being caned on the back of the legs. The mistress would take it slowly, circling me with the cane in her hand, waiting till fatigue started to set in, waiting till she could see faint tremors rippling down the back of the legs, then ‘whack!’. A sharp red horizontal line joins its companions. That would surely be both an ‘Mmmmm’ and an ‘Arrrghh’ moment.
It’s available from the eXtreme Restraints site.