"Exclusive Undersea Clothes for the following TEN characters, available for unlimited use on all maps in the game:

-John Joe's Underwater Clothes
-Salonbus's Underwater Clothes
-Jintaro's Underwater Clothes
-Madam Chyan's Underwater Clothes
-Uncle Tuu's Underwater Clothes
-Candy's Underwater Clothes
-Wu Mhi's Underwater Clothes
-Daniel's Underwater Clothes
-Baby King's Underwater Clothes
-Big Gamester's Underwater Clothes

*To use the Undersea Clothes Pack, you must own the 'Richman 4 Fun' (sold separately)."

More details on the official game page of Undersea Clothes Pack ...