FUN & FAMILY : Discover the underwater world with the Set Cozumel, for adults, mask, snorkel and fins combo from US DIVERS; This will give you a unique and out-of-the-ordinary adventure on your travels COMFORT : This snorkel mask features a 3-stage adjustable Pro-Glide buckle that lets you easily adapt the mask to your face for maximum comfort; The small-volume dual-lens design and tempered glass provide a secure, leak-free and fog-free fit for hours of comfortable exploration with crystal-clear views; Made with a hypoallergenic silicone-based face skirt for a watertight fit that prevents any water leaks into the mask COMFORT + : Fins channel water more efficiently to reduce fatigue and conserve energy while increasing power and speed SAFETY : Snorkel is designed to prevent water from entering the breathing tube above and below the water surface thanks to its ball sysubmersible Dry-Top system; Easy-to-use one-way purge valve allows you to clear any water from mouth; No more water in your US.DIVERS is a brand of the AQUALUNG group, market leader for over 80 years and world-renowned in the field of scuba diving