Elevate your pool days and outdoor adventures with the Wahu Mystery Key Treasure Challenge. This diving pool toy set makes it easy to engage in a thrilling pool mystery game with friends and family while improving your underwater swimming skills. Search for the keys to discover which one will unlock the treasure chest then release the trap door and dive to collect the shiny rings, goblets, crowns, and genie lamps around the pool! For endless hours of outdoor fun, the sunken treasure chest has a randomized lock that ensures an exciting underwater mystery every time, and the included waterproof paper allows you to create your own challenging game rules or write secret messages in a bottle for an enhanced treasure searching adventure. This underwater search and find game comes with 1 treasure chest, 1 bottle, 9 reusable waterproof papers, 3 keys, 3 rings, 3 goblets, 3 crowns, and 3 genie lamps, and it's recommended for ages 5 and up.