The Bikini was designed for the economy minded hunter/shooter who prefers a one piece, quick clearing scope cover. Two pliable rubber like cups joined by stretch retainers create a tight moisture and dust proof seal to protect your valuable optics while in storage, transit or in the field. The Tini Bikini cover is excellent for shorter pistols, shotguns, and red dot scopes. It's shorter to ensure a waterproof fit on these scopes.