100PCS 9"x12" Business Bank Deposit Bags - High Level Security Tamper Evident Bag - Self Adhesion Plastic Security Deposit Bag

Buenasss!!!!!

So easy and cheaper than the rest.

The size is great for us

Needed this for sports! Large bags, great quality! Also great value for money.

Perfect, thank you very much for good customer care.

Exactly what iordered

Works for the intended purpose.

I probably bought these to satisfy my inner spy kid, but they are definitely not child like in quality. They are professional, durable and highly tamper resistant bags. I'm just going to cut to the chase on some key points here:1. The plastic is strong, but of course, it's not going to stop anyone who wants what's in them. Still it takes some effort to put your finger through and tear open, so they will certainly stand up to normal use.2. They are clearly marked with unique serial numbers, bar codes and labeling templates to note what's inside.3. There's a tear off receipt with a matching serial number.4. The adhesive is strong, but it takes a little while to bond. That is, if you try to open it immediately after sealing, the bag will open relatively easily (although the "void" indicator gets damaged). However, if you wait a while (in my case, overnight), the bag will not open. In fact, it would be easier to just tear open the bag, because forcing the seam open pretty much destroys it after it's bonded.5. There's a security "VOID" indicator in the adhesive, so if someone opens it before the adhesive bonds, it obviously reads "Void," letting you know someone opened it.I personally see no way to open this without making it obvious that it was opened; and that's the whole purpose: to ensure the contents are not unknowingly tampered with or viewed.