Tamper proof poly bags

Directly pick a size that fits your items with room to seal securely. For this listing, you’ll find A2-sized bags (412mm x 567mm) and A4-sized bags (23x36cm) in white and black, made from polyethylene and featuring an invoice pocket, all from a generic-brand line. Consider whether you need an invoice pocket, brand color, and the expected shipment volume, since these come in several pack sizes. If you need clear tamper evidence, look for bags with dedicated tamper-evident features or plan to add tamper-evident tape or seals, as standard courier bags may not be fully tamper-proof on their own.

The most complex feature is the tamper-evident sealing system, which combines a secure closure with an indicator that shows if the bag has been opened. Look for a strong adhesive seal, plus an additional element such as void tape or a security label that leaves a detectable mark when peeled. In this catalog, the items are standard polyethylene courier bags with an invoice pocket; to achieve true tamper evidence you may need to apply tamper-evident tape or seals or choose bags that explicitly advertise tamper-evident features.

For beginners shipping modest orders, standard tamper-evident poly mailers with invoice pockets are typically enough and cost-efficient. For pros handling high-value or sensitive items, select larger sizes and higher-volume packs, and seek bags with stronger seals or built-in tamper-evident features. The current range offers white or black options in A2 or A4 sizes with invoice pockets and various pack counts, so pick based on your expected volume and required security.

Store poly bags in a cool, dry place away from heat to preserve adhesive and integrity. Inspect seals before sealing and avoid reusing bags if tamper evidence is important. Ensure the bag size matches your item and that the invoice pocket remains accessible after sealing. These polyethylene courier bags with invoice pockets are designed for standard parcel handling, but verify any carrier-specific requirements if security is crucial.

Color does not change tamper resistance, but white bags are brand-friendly while black bags offer discretion. Size matters for secure closure, with A2 (412x567mm) and A4 (23x36cm) options fitting different items. Choose quantity based on forecasted orders (25, 100, 500, 1000 pieces) to keep stock aligned with your shipping needs.

They are general courier poly mailers with invoice pockets, suitable for many domestic shipments. For international shipments, confirm carrier guidelines and ensure the bag dimensions and material meet requirements. If security is a priority, consider applying tamper-evident tape or seals and choose bags that advertise tamper-evident features, so you have clear proof of tampering if it occurs.