This the best plug I have yet to find. The bulb is just right....it is not too big in overall mass making it comfortable for long periods of wear. At the same time the bulb is not too small....as it never feels like it wants to fall out. The shaft is very slim, which again allows for long duration wear without any aches. The ring is also slim making this plug comfy....it does not matter if you are sitting, bending, standing the ring is great. I think you can wear this plug all day and be comfortable.