The skirt of the diving mask attached to the snorkel is made of rubber, or latterly silicone. Older-generation snorkel masks come with a single oval, round or triangular lens retained by a metal clamp in a groove within the body of the mask. An adjustable head strap or harness ensures a snug fit on the wearer's face. The body of a mask with full-face coverage is fitted with a chinpiece to enable a complete leaktight enclosure of the mouth.
The uniform made its Olympic debut at Sydney's Bondi Beach in the 2000 Summer Olympics amid some criticism. It was the fifth largest television audience of all the sports at the 2000 Games. Much of the interest was because of the sex appeal of bikini-clad players along with their athletic ability. Bikini-clad dancers and cheerleaders entertain the audience during match breaks in many beach volleyball tournaments, including the Olympics. Even indoor volleyball costumes followed suit to become smaller and tighter.