1" Blue, Color-Code Labeling Tape, Removable Adhesive | 60 Yard Roll 1" Wide, 60 Yards Long | Solid Blue Color Sticks Securely, yet Removes Cleanly & Easily from Non-Porous Surfaces Easy to write on with marker or pen (ink doesn't bleed through or smear) Acid free, PH Neutral & Re-positionable | Works Well in the Freezer 4 mils thick, made of plasticized paper (much stronger than masking tape)