Comments about Blue Reef Blue Reef Mesh Bag for Mask & Snorkel:
it was lightweight, available in bright colors, very durable, inexpensive.
The cons were very obvious, it's not anywhere near waterproof or water resistant, even sand and dirt can get in it. If left unaccompanied, someone will come by and take it, do not use it to keep your money, credit cards, passport, watches, jewelry or electronic devices, thieves will know, they are very clever. not UV protected.