Dimora Ag Silver Sacrum Foam Wound Dressing Bandages Silicone Adhesive Border 7″x7″ Waterproof Sacral Pads Absorbent Breathable Bed Sore Pressure Dressing. FOR PREESURE ULCERBED SORE：It is a sterile, single-use dressing, the foam layer contain about 0.25-0.35mg/cm2 silver.