The Fluida Cobia snorkelling set from Mares is an adult set, made from tempered glass, 100% silicone, making it extremely good quality. The Mares Cobia mask is super comfortable and features a single lens and an easily adjustable strap. Being silicone, this will last many years, being cleaned properly after every use. The snorkel in this set is also made from silicone and has a comfortable mouthpiece, a flex tube and a purge valve at the bottom, to allow water to be blown out. The snorkel also has a wash over dry top to minimize water entering the snorkel. The fins are full foot fins which are very comfortable to wear.