It is equipped with a splash guard on top of the snorkel tube and a blow-out valve in case water should enter the snorkel. The mouthpiece is made of high quality, hypoallergenic silicone which ensures ultimate comfort. In addition, it is ergonomically shaped so that the child's jaws are prevented from getting tired - for long snorkeling fun! And for safety: The snorkel is equipped with a whistle that the kids can use to make themselves noticeable in emergency situations.