These USP Type VII cotton sponges are ideal for wound dressings, wound packing and general wound care. Our strictly controlled manufacturing process assures clean, debris-free packing with folded edges to prevent unraveling. Sterile 2's are packed in a coated paper envelope to reduce fiber debris. This easy-open envelope is also carefully sealed to prevent the intrusion of dust and contaminants. Sterile 10's feature strong rigid trays. Also available in non-sterile bulk packs. Sterile Trays 4" x 4" 12-ply.