This is my main rubber paddle. I got it from an online vendor on the recommendation from one of my Yahoo friends. (Yes she is a spankee) This paddle is about 1/2 inch thick of solid rubber and it packs a wallop. Not a wallop like a wooden paddle packs, but more a wallop in terms of a deep, burning sting.
I have not had this long enough to learn all its capabilities yet but so far it is a very effective implement of discipline. All of the naughties who have felt this so far have told me that it stings like the very dickens and it has proven to illicit promises to behave much better indeed. I haven't yet found someone who would consider this a favorite option for 'play' type spankings but it certainly engenders a lot of respect for a punishment.
It is 12 inches long and 3 wide so it has a short enough handle to use OTK which is my fave anyway. It's big enough to cover about a 1/3 of the average female butt cheek, so it's not too huge to have good control. (No I don't have any data on the area of the average cheek, but this my estimate). It is flexible so you do have to kind of aim it to keep it travelling in the right direction.
I am very happy with the purchase, however I have not yet had an enthusiastic response from those who have felt it. Spirited responses yes, but not enthusiastic ......yet anyway ;)