100 Pcs Transparent Zip-Lock Reclosable Bags ESD Anti-Static Shielding Storage Bag Reusable Clear Pouch (Assorted Sizes) … (5.9"X7.9"(15x20cm), 100pcs zip lock)

All bags arrived in a timely manner, within a couple days or so of when I ordered. I've bought every size from this seller, and these are good quality bags. The zip-lock is strong and won't accidently open. The plastic itself is also very sturdy. In my stubbornness to fit parts in bags a little too small, I've seen them stretch and protrude, but I've been unable to actually puncture or break a bag yet. I would assume it'd take a lot of effort. Please keep in mind that the usable space in the bags is a little smaller than the actual size, about 1cm from the width and 2 cm from the length. That would make a 7X11cm = 6X9cm, 8X12 = 7X 10cm, 13X18cm = 12X16cm, 15X20cm = 14X18cm. This is pretty typical of bags like these, as it's designed that way to ensure proper sealing all the way across. If you want bags that are actual size, then go for pink anti static bags instead, but keep in mind you'll sacrifice durability. All in all, I recommend going for it!

I would buy them again.

Not scent-proof