I've been wearing Twisted X for a little over a year riding MOCS with Cell Stretch as a non-slip surface. The new job requires black shoes (my previous ones were grey). They don't stretch but I ordered them anyway based on the picture that says "non-slip" on the sole. The shoes I received are not marked as "non-slip". and of course I fell several times during my shift. The shoes are comfortable so I keep them for casual wear but I need to get a new pair of work shoes.