Body attachment wafer for an ostomy device

A body attachment wafer for attaching an ostomy device to a wearer, comprising:

• a plastic film having an opening therein,
• a layer of hydrophobic adhesive coated onto one side of said plastic film, and
• a stiffening layer releasably attached to said plastic film on the side thereof opposite to the side coated with the hydrophobic adhesive,
• wherein the layer of the hydrophobic adhesive is configured to adhere to skin and comprises a region surrounding the opening in the plastic film in which the thickness of the layer of adhesive is decreasing in a direction towards the circumference of the plastic film, the layer of adhesive having its largest thickness adjacent to the opening in the plastic film, and
• wherein the layer of the hydrophobic adhesive consists of a hydrophobic silicone gel adhesive having a softness exceeding 8 mm.