These 3mil Sure-Seal Tamper Indicating bags require no prepackaging of evidence prior to use. Once the adhesive closure strip is exposed and sealed it is permanent and impossible to open without destroying the seal and showing obvious signs of tampering. Includes white write-on area, tear and puncture resistance durability, removable submission receipt, and the convenience of clear, see-through material. Available in four sizes. Provided in packages of 100 and case packs of 500.