Bag, comprising a tube having a closed end and an open end, wherein: - the tube is made of a fabric and comprises at least one set of pleats (13, 15); - longitudinal folds (13a-13g, 15a-15g) of the at least one set of pleats (13, 15) are secured in place at the closed end of the tube, wherein sections of fabric on opposite sides of each longitudinal fold are arranged the one on top of each other in a folded state of the at least one set of pleats (13, 15); - sections of fabric that extend between two longitudinal folds each comprise at least three parallel transverse folds (19, 21, 23, 25, 27, 29, 31) in alternating directions that extend transverse relative to the pleats (13, 15); - in the folded state of the at least one set of pleats (13, 15), the transverse folds (19, 21, 23, 25, 27, 29, 31) of adjacent sections of fabric are arranged in a nesting relationship such that each set of nested transverse folds (19, 21, 23, 25, 27, 29, 31) provide a combined transverse fold and the sets of nested transverse folds (19, 21, 23, 25, 27, 29, 31) provide at least three parallel combined transverse folds in alternating directions; and - a base element is provided at the closed end of the tube, characterized in that: - the at least one set of pleats (13, 15) comprises at least five parallel longitudinal folds (13a-13g, 15a-15g) in alternating directions that extend from the closed end to the open end of the tube; - a plate (51, 53, 151, 153), preferably a handle plate (51, 53), is provided at the open end of the tube and configured to provide a weight that helps to pull the pleats (13, 15) into the folded state and that helps to bring the transverse folds (19, 21, 23, 25, 27, 29, 31) together to form the combined transverse folds under influence of gravity when the tube is suspended from its closed end; - wherein the at least three parallel combined transverse folds (19, 21, 23, 25, 27, 29, 31) in alternating directions are arranged such that in a further folded state of the at least one set of pleats, the sections of fabric on opposite sides of each combined transverse fold are arranged the one on top of the other and the base element provided at the closed end of the tube is a base plate that is attached to the tube at the closed end such that in the further folded state of the at least one set of pleats (13, 15), a stack of fabric sections is arranged between the base plate at one end of the stack and the plate (51, 53, 151, 153) at the other end of the stack. - the tube is made of a fabric and comprises at least one set of pleats (13, 15); - longitudinal folds (13a-13g, 15a-15g) of the at least one set of pleats (13, 15) are secured in place at the closed end of the tube, wherein sections of fabric on opposite sides of each longitudinal fold are arranged the one on top of each other in a folded state of the at least one set of pleats (13, 15); - sections of fabric that extend between two longitudinal folds each comprise at least three parallel transverse folds (19, 21, 23, 25, 27, 29, 31) in alternating directions that extend transverse relative to the pleats (13, 15); - in the folded state of the at least one set of pleats (13, 15), the transverse folds (19, 21, 23, 25, 27, 29, 31) of adjacent sections of fabric are arranged in a nesting relationship such that each set of nested transverse folds (19, 21, 23, 25, 27, 29, 31) provide a combined transverse fold and the sets of nested transverse folds (19, 21, 23, 25, 27, 29, 31) provide at least three parallel combined transverse folds in alternating directions; and - a base element is provided at the closed end of the tube, - the at least one set of pleats (13, 15) comprises at least five parallel longitudinal folds (13a-13g, 15a-15g) in alternating directions that extend from the closed end to the open end of the tube; - a plate (51, 53, 151, 153), preferably a handle plate (51, 53), is provided at the open end of the tube and configured to provide a weight that helps to pull the pleats (13, 15) into the folded state and that helps to bring the transverse folds (19, 21, 23, 25, 27, 29, 31) together to form the combined transverse folds under influence of gravity when the tube is suspended from its closed end; - wherein the at least three parallel combined transverse folds (19, 21, 23, 25, 27, 29, 31) in alternating directions are arranged such that in a further folded state of the at least one set of pleats, the sections of fabric on opposite sides of each combined transverse fold are arranged the one on top of the other and the base element provided at the closed end of the tube is a base plate that is attached to the tube at the closed end such that in the further folded state of the at least one set of pleats (13, 15), a stack of fabric sections is arranged between the base plate at one end of the stack and the plate (51, 53, 151, 153) at the other end of the stack.