This is the Akona Adult Mask, Snorkel, Fin Set Scuba Diving Kit Features: Hair-Safe Elastic Mask Strap High-Quality Silicone Mask Skirt Dry Top Snorkel S.O.S. Safety Whistle High-Quality Silicone Mouth Piece Adjustable Fin Straps The perfect snorkel travel set for adventurous adults who want to explore the ocean. The open-heel design means each fin can accommodate a wider range of sizes. Family members and friends can share equipment easily.