Neoprene is durable, but also soft. Neoprene products can temporarily change shape if stored improperly. For example, if the bag is stored constricted and thus subjected to pressure or if it is pressed against uneven surfaces. We therefore recommend that our bags be stored on a flat surface in a dust bag, which we send with every order, and avoid direct sunlight. If pressure marks do become noticeable, the bag can be filled well with a towel, for example, and stored overnight on a flat surface. This usually fixes the deformation again.