They are made of durable non-woven material that sticks firmly to the skin for many hours, protecting the wound, and has a highly absorbent non-stick pad in the center . Available in 5 sizes, in a package of 40 pieces. They allow the skin to breathe With hypoallergenic adhesive to prevent skin irritation Superabsorbents 2 dressing shapes to protect different types of wounds Dermatologically tested & approved with the top pro-DERM certification