Click on what texture(s) you have in your fleshlight(s). Also post a review of your texture, do you want another or different texture? I have two the supper ribbed and speed bump. I think the speed bump is the same as the stamina training unit. I use the speed bump much more. The wonder wave isn't used at all any more. Been looking at the vortex; any one know if that is more intense than the speed bump?