Silicone wound contact layer remains in place best over wounds when one continuous piece is used and anchored on all four edges with at least 1 cm to intact skin surrounding the wound. When a wound is larger than can be accommodated by our largest size, you may use and overlap two or more pieces by up to 1 cm, but observe the overlapped edges at each change of the cover dressing to ensure that they remain in contact. Note that the overlap may cause occlusion of the holes in that area.