What?  –  The Holga Camera is a Medium Format Camera.  It is available in it’s original 120 medium format and Lab friendly 35 mm.  Holga uses a plastic lens to make the image prettier.

The Camera – 

Samples of Holga Image –

Film – The Holga camera uses a 120 roll of film

56 mm × 56 mm (6×4.5cm or 6x6cm film format)