Heat Shrink Film (100pcs)FEATURES: The shrink wrap bags are made of high quality PVC material, durable to use The heat shrink wrap film with high light transmittance, which makes the keys are clearly visible. Strong shrinkage, easy to leave air inside Made of clear PVC material Easy to attach and remove the shrink film so anyone can use it! Step1: Put the product that you need in If the shrink wrap bags are too long then cut it to suit for the product. Step 2: Dry product