【Superior Product Protection】: The upgraded packing foam protect small and medium-sized items of almost any shape and weight, virtually eliminate 99% shipping damage during transportation. Our expanding foam bag are widely used in logistics transportation for the protection of high-value, fragile items, etc... | 【Fast Expansion】: Our expanding shipping foam expands in seconds to form custom-fit protective foam cushions with high efficiency. Everyone can become a packaging expert — instantly, confidently, professionally, requires no additional equipment. | 【Compact and Convenient 】: This Expanding Foam Packaging Bag is quite thin and light, folds up like a small wallet, easy to carry.Compared to traditional shipping foam, it takes up little space and is completely mobile so you can use it anywhere. | 【Instruction】: Spread the bag flat --- Squeeze the liquid in area A to area B --- Press to mix the liquid --- Wait for the liquid expand and break through the A/B area, then quickly and evenly distribute the liquid into the whole bag (in this step and the next steps you need to be faster, because the liquid will expand quickly and become solid) --- quickly put the bag in the box and put the item on the bag and waiting for it fully re act and form fully protection. | 【Pack of 8】: We provide 8PCS upgraded Expanding Foam Packaging Bags, enough for you to pack at least 4 packages, saving you the trouble of repeated purchases. #10 (14"x16") Recommended for box size 8"x8"x8". ( If the box you used is relatively large, two or more foam bags can be used at the bottom and top of the box to make them expand and solidify until the items are completely wrapped. )