Seac Snorkeling Set Bis Elbaseac Elba is a Twin lens mask with tempered glass, polycarbonate frame and high quality hypoallergenic silicone. The buckles allow you to set the strap instantaneously for a perfect fit. Whether you are new to snorkeling or an experienced diver, The SEAL Elba mask will surprise you with its comfort and easy to use Features. The SEAL Fast tech dry snorkel features a dry top, that effectively blocks water from entering the snorkel, and a purge valve.