【Size ＆ Dimension】: Item Flat Dimension: 18" x 24" , Recommend box size 12”x 12”x 12” . Came in 2 PCS. 【Newly Cushion Foam】: The Fast Expanding Foam will custom fit your own shape of the product,make it ultra safe while shipping.Newly Expanding Package Provide Superior Product Protection- Virtually eliminate shipping damage. 【Easy to Use】:The packaging bag is easy to use, just squeeze the area “L ”and “R” to break the block between, Mix the liquid in these 2 area, then push it as even as possible to all the empty area in the bag, put in the box and put the item you want ship, hold it and wait the expanding, then you will get a cushion foam perfectly match your product. 【Convenient ＆ Protective】:The Expanding Foam package is really small before use, which means takes a small amount of storage and no messy clean ups. Perfectly match expanding foam reduces risks during transit. 【Warranty Free】-We provide 100% customer satisfaction guarantee. If there’s any problem,feel free to contact us via Amazon- TONESPAC. TONESPAC Packing and Shipping Instapak Quick Bag