Perforated for easy dispensing. Rolls can be placed in bottom of trash container for convenience. High Density polyethylene bags are generally available in lower gauges and are more temperature resistant. About 3 times stronger and more durable than ordinary polyethylene liners of the same thickness. About one-third the thickness of ordinary low density polyethylene liners results in more compact storage. Substantial cost savings per liner. Extremely wide range of temperature resistance from -40°F to +212°F. Confines odors, USDA and FDA approved.