purchased Small size. It’s great on its own and spectacular w vibrator or two at same time. I think I’ll go for the L size next. The soft silicone and ease of use is great, the loop is long enough for inserting creatively.So far, best combo- in this order: all beads w loop hanging outside your bottom, favorite 2-3 finger size vibrator w/ leash hanging out for retrieval, seal the wet stuffing n stretching w favorite butt plug squeezed in like a cork, making you hold it all while it’s vibrating and slowly expanding your booty duty score of assessment :)