These tamper evident labels were specifically designed to keep your product safe while your customer drives home with it. United Canna Supply's highly reflective substrate and proprietary anti-peel system will immediately clearly show any attempts to tamper with the label and/or show if the packaging was opened. We have thoroughly tested the super sticky, permanent adhesive and works perfectly with all of our packaging, even at temperatures down to 0 degrees . Truth be told we haven't run into any packing our tamper seals don't work with! PreRolls, Concentrates, clear coated cardboard, this one tamper evident label and meet all of your needs! .4" x 2" for use on larger jars or pop tops, place the tamper seal on the opposite side of the bottles hinge.