I used to rent equipment, but this past year I bought my own mask and snorkel, and rent the fins. Snorkelling is much more enjoyable using equipment that fits right. When you go on a tour, you are told to spit in your mask to clean the glass and prevent fogging. Plus, how many people have had that snorkel in their mouth? I'm sure the stuff is just rinsed off after each use. Yuck!