Aqua Sphere Zip VX Fitness Swim Fins, Blue/Grey, Small

These are getting hard to find; may be discontinued? After several years of use in my saltwater pool they gave up the ghost and when I tried to find them again, they didn’t show up for purchase anywhere. Bought another newer model that were stiff and inflexible molded foam, and so uncomfortable I had to return them. Finally found these again and hope they will remain available.