The GoPlay series are Sketchers answer to the casual slip-on shoe you can actually work out with.  I wouldn't use them for running, but they are perfect to take to work and leave there for occasional lunch outings to the gym.  I bought 2 of these because they are incredibly comfy.  I use one pair for casually slipping on for a walk or running errands.  I leave the other at work for those days when I may want to go to the gym but not lug sneakers around.  They are light, comfy and easily portable to squish into a workout bag.

One small caveat: they appear to run slightly small (as some of the more fitted Skechers do).  In all shoes, I'm an 8, but in certain more fitted Skechers, I'm an 8.5.  I had to get an 8.5 for these.