8 Pcs 14”x16” Expanding Foam Packaging for PC & Irregular-Shaped Items - Shockproof Expandable Packing Foam, Protective Computer Shipping Material for Electronics & Fragile Devices

These worked well when I shipped my PC from Japan back to the states Beware when placing in tight corners it can push components apart it did dislodge my GPU from the port (no damage) just reconnect And it did bend some pins on the mother board but they were RGB fan pins I dont use Don't force it in tight areas or overly pack more bags into the case like I did (User error)

They do work great, exactly what I needed. I wish they expanded a bit more, but for what it's worth they do the trick. They are very easy to use, if you can't figure out how to use them after watching the video then it's strictly user error. Caution they do get warm after expanding, so I would warn that once it expands and forms you should remove it from your item and let it cool down.

Purchased for a large shipment I did. Pros: - Easy to use - Expands to an adequate size (roughly 3-4 inch vertical expansion) - Compaction Protection is adequate Cons: - HEAT! These packs, once activated get pretty hot. - Fast curing time. Once activated, you have about 30 seconds max to get it placed where you want. - The plastic can get punctured on sharp items. In my opinion, just have a plan for positioning before activating and delicate handling when placing.

They worked as advertised but they are way smaller than you think they are going to be. When mine expanded the foam didn't fill the entire bag and it only expanded a max of 3 inches. This overall makes them quite expensive.

Cool stuff! & Worth the money.

Utterly worthless. Expanded roughly half and inch and did not even fill the bag. You cant shape anything too it because its not thick enough to shape. Offers no shaping, padding or anything. Demanding a refund and can not say strongly enough this product is garbage.

Great for protecting my pc when traveling or moving to my new home!

Could not get the expandable foam to securely wrap and protect our product. Seems easy to do after reading the directions, just didn’t work for our project. We tried several times and made slight adjustments each time. Product does expand quickly and harden as mentioned. Hope you have better luck than we did. Would be great if you have success.