Package：5 bags and 6 pull bows with some Metallic Twist Ties Type: with Tiny Air Vent Holes; Shrink Temperature: 212°F-338°F (100-170º C). [HOW TO USE]: Step 1. Put the product in the shrink wrap bag; Step 1. Seal and cut off the redundant part with the impulse heat sealer; Step 2. Heat the bag with a heat gun or a professional Tunnels Heat Shrink Packing Machine; Step 3. Until the shrink bag completely clings to the product. You can also treat them as common bags to pack gifts for others. TIPS: 1. If it is used for DIY package, the heat gun can not stay in the same area for too long. It is necessary to keep moving the heat gun to avoid excessive heat expansion; 2. Ordinary household hair dryers can't work because it can't heat up to the 210°F-338°F required for shrinkage; 3. During production, a small pinhole vents have been made on the bottom of the bag for easy and perfect shrinkage,and the holes won't be obvious after the heat sealing is completed.