The term bellows is used by extension for a flexible bag whose volume can be changed by compression or expansion, but not used to deliver air. For example, the light-tight (but not airtight) bag allowing the distance between the lens and film of a folding photographic camera to be varied is called a bellows.
What NFL has lost the Super Bowl the most? The Buffalo Bills, the Denver Broncos, the Minnesota Vikings, and the New England Patriots have all lost four Super Bowls. Edit
In one of the most defensive Super Bowl matchups in NFL history, the Broncos took an early lead in Super Bowl 50 and never trailed. Denver recorded seven sacks and forced four turnovers. Carolina likewise kept pace by recording five sacks and forcing two turnovers. Denver linebacker Von Miller was named Super Bowl MVP.