Three Separate Heat Sealed Rails Secure Edges From Separation Or Tearing By Instruments. Seals Are Heated And Cooled Three Times For Ultimate Strength. • Secure Seal - Extra Wide Chevron Seal Protects Against Instrument Breaching. • Medical Grade Paper - Wet Strength Treated, Virgin Medical Grade Paper That Meets Or Exceeds Medical Pouch Standards. • Blue Tinted Transparent Film - Facilitates Both Easy Instrument Viewing And Identification Of Punctures Or Tears In Film. • Wide Self-Seal Adhesive Strip - Easily And Securely Seals Pouch, Providing Reliable Seal Until Pouch Is Opened. • Perforated Fold - Facilitates Easy, Accurate Folding Of Adhesive Strip To Form Airtight Seal Until Pouch Is Opened. • Complete Paper-Film Separation - Consistently Clean Separation (Peeling) Of Paper And Film Is Due To High Grade Materials And Adhesives. • Thumb Notch - Assures Easy Opening Of Pouch. • Six Corner Tack Seals - Prevents Corners From Curling After Sterilization. Tacks Resist Collection Of Dust And Contaminants Near Seal. • Process Indicator Arrows - Arrows Change Color With Sterilization Heat, Are Easily Visible, And Are Compatible With Steam And Eto Sterilization Agents.