The size, shape and material are fine. It's the base that needs improvement. The little round disc is not comfortable for long-term wear. I would prefer a longer skinier base like they offer in their tantus line.
The Keg may be my favorite plug. The shape is just the right length and width to give a full feeling for an extended period of time without any discomfort. The price is also very affordable, and the Keg would be a good buy even at twice the list price. Thanks, Tantus! Every fan of anal play should add the Keg to their toy collection.
The design of this plug makes it great for stimulating the prostate. People usually think a toy has to be curved in order to hit the prostate, but this plug proves them wrong. Put this plug in, sit on the bowl and start strokin' it - you will be AMAZED!!!