A disposable unit (1) for processing products (2), especially for mixing or agitating solutions, dispersing or homogenising solutions or suspending solids in liquids, which unit (1) comprises a thin-walled container (3) of a soft material for holding the products, and a processing unit (6) arranged in the container and adapted to make the products move, characterised in that the container comprises at least in its lower portion (4) a support (5) as a reinforcement made of a dimensionally stable material, and wherein the support (5) has a smooth surface (9) and supports the container (3) over substantially it entire lower portion (4) so as to counteract the occurrence of folds and other irregularities in the lower portion and the impairment of an even process effect.
