It took my feet a long time to get used to the insole. Most sandals use the same product. It was very uncomfortable for the first few hours. I especially like that the back strap is easy to put on and take off.
Pros
This is the first time I've had water sandals. The investment is worth it. The racquets were tennis shoes.
Cons
The straps and buckles of sandals can easily tear or loosen, leaving the wearer vulnerable to accidents.