Now that I have my unicycle and through the box away I am finding things out that should have been made apparent at the beginning like the upper weight limit. Why don't they post them in the individual unicycle specs?. I found 2 different references on the unicycle.com site. One says 175 lb and the other 150 lb so with the unicycle I have I am pushing the upper limit. Looks like it come down to the axle. Mine is just hardened and what I should have is a cromoli one. There is a 26 inch which they are suggesting for adults that has the same axle.