This order contains 500 pcs. Of premium quality tamper proof courier bags of size 10" x 12" (inches) with 2" flap. Thickness is 60 micron or 240 gauge. Please not that these courier bags comes with pod/pouch/pocket/address slip cover to keep the courier slip. These bags uses the premium quality adhesive for sealing tape which makes the bags tamper proof. It is not possible to open the bag without tearing once sealed. These bags can used for courier ,confidential and private uses.