These are the best pool shoes I have owned.  The tread is still good on the pair I've been using for nearly a year now, the insoles are still intact, and the fabric is in decent shape.  I purchased a new pair just like them but probably won't have to dump my old pair for a few more months.  I attend or teach water aerobics about 3 days a week most weeks and the bottom of the pool is very slippery in places.  These shoes grip well and I never slip.  I went through several pairs of cheap shoes from a big box store, and the tread wore off very quickly and the insoles fell out in no time.  These Speedo shoes haven't had any of those problems.  They have been well worth the price.

Sizing: I wear a 7 1/2 in regular closed toed shoes and tried these in a 7 at first when I read a review that they run big.  But they were much too small.  The 8 fits me perfectly.  So I'd recommend getting them in your correct shoe size, or one half size up since they only run in whole sizes.  You can tighten them with the cord if necessary, but I haven't had to even use that, I can just slip them on and off and they never feel like they are falling off in the water.