The ornamental design for a shelfsystem, as shown and described.
FIG. 1 is a perspective view of a first embodiment of the shelf system having a lever-enabled suction structure. The broken line showing in the figures is included for the purpose of illustrating portions of the shelf system and form no part of the claimed design. The broken line showing immediately adjacent the shaded areas represents boundaries to the claimed design and forms no part of the claimed design.
FIG. 2 is a front view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1.
FIG. 3 is a rear view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1.
FIG. 4 is a top view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1.
FIG. 5 is a bottom view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1.
FIG. 6 is a left side view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1; and,
FIG. 7 is a right side view of the first embodiment of the shelf system having a lever-enabled suction structure of FIG. 1.