I guess it depends on the type of material and grip they have?
I've been using mine on tiles and it has a pretty good grip to them so it hardly slips at all? I've found that my feet will slip before the ball does.
For the most part though, i've been using it as my new computer chair
Quote:
seethreepo
said
I had much different images about what this post was about when I read the subject .
I thought it was some sort of testicle injury thread..
doh !
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hehe, don't worry, i'll be making a thread about my recent elephantitis shortly