I participate in a water aerobics class at the Y three times a week.  The pool slides I had were stiff and inflexible and I had a dickens of a time getting them on when I came out of the pool.  I searched the web a lot and decided to try these Speedo Pool Slides.  I am extremely pleased with my choice.  The adjustable top is great--you can fit them to your foot.  They slide on easily and they are very comfortable.  They are moderately priced.  I give them 5 stars.