1.Material LDPE 2.Type:Flat open&Envelope open 3.Feature:anti-static,good protection,Shock-proof,recyclable, ... and shock reduction function through the sealed air bubble chambers.The anti-static air bubbles bag and air bubble sheet can prevent products from damage ... PE/LDPE/LLDPE, relatively low cost and widely use.4)Envelope bubble bag could be made into different colors,thicknesses,sizes according ...