Easy to use, no sealing machine, a sticker to get. Easy Opening thumb notch on every pouch.-Sided self-adhesive tape, when used to tear off the top layer of paper, you can self-adhesive seal.-Special double-sided tape adhesive sealing-Perforated Fold helps form an airtight seal for storage-Secure seal for protection on possible tearing of sharp instruments-Sealed corners help prevent curling and collection of any contaminates