Aqua lung vision set this aqua lung vision set features a vsionflex mask which offers maximum comfort a wide field of vision as well as a customised fit perfect for you thanks to its adjustable strap fastening its included snorkel is designed with a flexible corrugated tubing that is easy and quick to fix clip together its silicone mouthpiece offer comfort vision set 2 pieces mask visonflex comfortable wide field of vision adjustable head strap snorke