An ostomy bag comprises two opposing walls (1a, 1b) defining internally opposing surfaces. The walls are welded together along a seam (2). The front facing wall (la) is transparent and through it can be seen a leaf (3) of flexible lightweight material which is welded into the seam (2) between the two walls (1a, 1b). The dotted outline represents the position of an inlet (4) passing through the rear wall (1b) into which, in use, deposits are received. In use, the inlet (4) is positioned above the section of the seam (2) where the leaf is welded between the walls (1a, 1b).
