3M™ Medipore™ Composite Dressing 3-1/2 X 6 Inch Rectangle Sterile Nonwoven Backing (324094_BX) 25/BX3M's Medipore pad covers and protects different wound types for versatile use. The white pad is highly absorbent to handle wound drainage effectively. It won't stick to the wound bed for less pain upon removal. A soft cloth tape backing provides superior breathability. The dressing is conformable for easy handling and application. 3 1 2 x 6 inch adhesive dressing has a 1 3 4 x 4 inch pad.