15” x 18” 2 PCS TONESPAC Instant Pack Quick Expanding Foam X-100 Packaging Bag for Packaging and Shipping

Used a few of these when moving, to protect my computer tower. They worked great! After a two thousand mile drive across the country everything was still in one piece and the foam remained as stiff as when I first set them up. Would definitely use again

I love these bags. Once activated you have to move really fast, and I mean fast. To get it in place. Have the box, the item and the bag ready and works best with 2 people working together. But these got my collection of semi-precious rocks moved in a crappy UHaul with no breakage whatsoever, not even shifting in the boxes. I’m very pleased with these.

I got the two pack to fill the cavity of a PC I was shipping. One was okay, expanded about 1” - 1.5”, a bit less than expected but fine enough. The second one, same process, same mix time, same application, but it expanded half of that at best? So essentially useless on the second one.

I got the two pack— one barely expanded, one expanded at warp speed.I followed the directions the same way for both bags, pop the inner left bag, then the right, and quickly squish back and forth 15-20 times.For one bag, popped both L + R, gave it 20, maybe 30 squishes back and forth, and nothing was happening— not expanding, not heating, nothing. I could see the liquid spreading out in the bag a bit, but no volume. After about 2 minutes it got a little warm and inflated a bit in a somewhat comical shape— did not remotely fill the bag and definitely did not expand enough pack anything. Unfortunate.For the other bag, I did the exact same process but stopping after 15 back and forth mushes, because it expanded insanely fast. It almost filled the bag, (didn’t make it to all 4 corners which is a tad annoying,) but it expands almost too fast to actually pack with if you’re planning to mix it, place it in a box, and then place your item on it. Wish it kicked a little slower, but I’ll chock this failure up to me being unfamiliar with its expansion rate.On top of that, the bags are so wildly thin. Snagged the bogus bag on the edge of the box after taking photos of it, and it just tore right open. Spilled weird little hard un-inflated foam crumbs everywhere.I’ve seen similar products from other brands work great in packages I've received— never seen this particular brand in any of these successful boxes. Now I know why.Also fun side note, I saw a review saying the bags came in a lipstick print box. I figured hey, maybe the shipper just ran out of regular boxes. But nope! That's just how the ship I guess, haha. spicy box, frustratingly mild product.

I bought this in order to feel more at ease bringing my gaming computer on a plane. For anyone that has one, you know the stress associated with having your graphics card and other components inside get jostled around. Yet with this expanding packing foam I found it extremely quick to bolster my computers internal integrity while also not needing to worry about the static discharge associated with actual packing foam. When I got to my destination, it was easy to remove and I was actually able to save the now molded piece of polymer so that if I take my PC anywhere, it is safe. Definitely would recommend this product.

buyer told me everything was in perfect condition and said that the instant packs are a life saver

These expanding foam packs I purchased were unfortunately defective despite the reviews of other customers. I think I may have received a bad batch!

I found it very difficult to spread the foam into the whole bag and place the item before the foam hardens. The foam literally hardens in a few seconds.