This product contains 200, 5 x 5 in. shrinkable packaging bags that can be cut to fit different-sized items. Made of PVC material, it is transparent and clear, with double-layer thickening that is not prone to tearing, and has a high shrinkage rate. When using, place the item in the bag, and heat it with a hot air gun or hot air tunnel to shrink and seal. Note: Do not heat in a sealed space. The shrinkable bags can seal items, extend the shelf life, facilitate storage, and prevent items from being scratched, dented or damaged. They can also retain the fragrance of products such as soap, bath balls, handmade soap, bath balls, essential oil bottles, candles, cosmetics, small bottles of red wine, and various DIY crafts. They are suitable for packaging stationery, photo frames, handmade soap, bath balls, essential oil bottles, candles, cosmetics, small bottles of red wine, and various DIY products.