Self sealing pouch. Our most popular size for jewelry and piercing needles. Available in 2.25" x 4" and packaged 200 per box. Unique triple seal on edges for added security in penetration of sharp instruments. Paper backing with blue tinted transparent film. Process indicator arrows will change to signal exposure to sterilization. Compatible with steam, chemical vapor or EtO sterization methods. SOLD INDIVIDUALLY OR 20 BOXES PER CASE.