Item Model Number: KND441408 (3/Boxes of 70 (2 Sponges per Packet, 35 Packets per Box) - The Dermacea I.V. Drain Sponges are made of a synthetic blend of rayon and polyester that helps provide fast wicking action and superior absorbency. The unique pre-cut T-slit conforms snugly around drains, catheters, chest tubes, I.V.'s and tracheotomies.