Size 13 is too small, I keep it for myself, don't pay for return postage, probably just cut a hole for the toes. And when used for a sandy beach, it will hold all the sand that is not suitable for sand, especially if it is too small for your feet.
Pros
These shoes are affordable and offer excellent value for money. You can get a quality pair of water shoes without breaking the bank.
Cons
Shoes are unattractive, making them difficult to wear in public.