Liners come in three resin types: Linear Low Density, High Density and Higher Alpha Olefin. Which type is best for you depends on your application, but there are a few general points to consider.
Economy	Recycled	Heavy Duty	Extra Heavy Duty
High Density	Blended Linear Low Density	Linear Low Density	Super Hexene
Great puncture resistance, but less tear resistance than linear low density	Good puncture and tear resistance	Good puncture and tear resistance	Maximum puncture and better tear resistance
Stronger than linear low density liners of the same gauge due to higher tensile strength and great load-bearing capacity.	Equal or better strength than a conventional Linear Low Density bag at a lower gauge	Equal or better strength than a conventional Linear Low Density bag at a lower gauge	Gauge-for-gauge up to 50 percent stronger than comparable Linear Low Density bags
Can handle extreme temperature changes without compromising material integrity	Good stretch in the transverse (TD) and machine (MD) directions	Optimum stretch in the transverse (TD) and machine (MD) directions	Safest choice when you are uncertain about what kind of refuse you'll have
Better chemical resistance. Require 2/3 less petroleum-based raw material so they cost less to ship and store	Up to 70 percent recycled resin content		Latest generation resin with a proprietary formula. Require 2/3 less petroleum-based raw material so they cost less to ship and store
Great all-purpose, cost effective liners, these bags are suitable for heavy, wet and non-sharp objects.	Thick, versatile liners satisfy EPA guidelines for recycled content and meet tough waste-handling needs. Ideal for heavy-duty applications like sharp, irregular waste	These are everyday-use liners that suit virtually any application and environment.  The most commonly used bag in the industry	The best features of High Density and Linear Low Density bags in one. Ideal for heavy, irregular waste, and best used when maximum stretch and puncture resistance are needed.