Abstract: This invention relates to a case with a variable capacity, comprising a central part (10) which has two stable frame halves (20,30) hinged to one another which serve as supports for a single pair of various size sheet pairs (41,42;51,52) defining the interior of the case, the shells (41,42;51,52) being detachably connected to the frame halves (20,30) of the central part (10), so that shells of different depths may be used together with the same central part. The invention also relates to a set of cases, comprising a central part and two or several pairs of shells.

Abstract: A longitudinally extended float includes detachable longitudinal-side attachments for attaching to a substantially identical float. The attachments are connected to respective opposite first and second longitudinal sides of the floats. The attachments are made up of elongated profiles extending substantially parallel to respective opposite first and second sides of the float. Each of the profiles has a generally U-shaped cross-section with leg portions of unequal length, the unequal leg portions including a long leg and a short leg. The long leg is part of a back piece which is attached to a respective longitudinal side of the float, the long leg being connected to the short leg by a bottom portion of the U-shaped profile. The U-shaped profile has an open end opposite the bottom portion. The float attachments further include a fin adjacent the open end of the U-shaped profile which is substantially parallel to the bottom portion of the U-shaped profile.