I had them, wore out faster than my TrialTechs, thinner and not as comfy! I've had several pairs of TrialTechs now, I'll never look back. People sometimes have trouble getting them to stick to the bar. They have some kind of waxy layer inside them, take a pan scourer with washing up liquid and roll it up and use that to scrub the insides of the grips, then clean the bar with something, then inflate them to get them on. (There's intructions in the wiki I think).