I bought this product for my little ones. The quality is great, nothing wrong, good fit and good workmanship. The snorkelling is also very good for beginners and therefore small children by the additional Ausblaßventil because there also may collect some water and thus does not interfere with every drop of water in the snorkel directly. The size specification for the fins is entitled, so do not fall too small / too big from. This set is really intended for snorkeling and not (only) to play in the nursery. Fully functional.