Humour is one thing, and should not be confused with plain jackass replies. Jalvin's asking a very decent question and none of you even bothered to give him anything that wasn't a childish answer. People who know me know i have a sense of humour.
But let's remember: This forum's ultimate aim is still as a place bowlers can come to for resource. All this "harmless humour" will only make a mockery of our forum and project an image nothing short of rubbish about bowlers. If you wish to engage in kid-talk, there are other forums there; or at least answer the poor chap first.
![Evil or Very Mad Evil or Very Mad](/images/emoticons/classic/icon_evil.gif)
Jalvin
The SST4 has only interchangeable soles on its sliding shoe.
The SST5 has interchangeable soles
and heels.
The SST6 is the same as the SST 5, but has a wider, broader base for more stability.
For the none sliding shoe, the SST4s and earlier SST5s have only a small rubber patch at the toes for grip, while the later versions up till hte SST6s have almost half the sole covered in rubber.