A given thickness of Linear Low Density Polyethylene (LLDPE) is significantly stronger than the same thickness of Low Density Polyethylene (LDPE). Therefore, Linear Low Density Polyethylene (LLDPE) can be thinner and lighter and perform the same job as LDPE. These bags are bottom sealed for added strength. Linear Low Density Polyethylene (LLDPE) also has a low melting point, which is required for heat sealing applications. Where better puncture resistance is needed use our Low Density Polyethylene bags (LDPE). Our 0.9 mil to 1.2 mil can replace 1.5 - 2.0 mil Low Density Poly bags. The 1.8 mil to 2.0 mil LLDPE can replace the 3.0 - 4.0 mil Low density bags.