These totally degradable plastic bags are designed to maintain their full strength for a year from manufacture under normal conditions. The useful life therefore has a time limit and this will be influenced by environmental factors such as heat, light, mechanical stress, exposure to sunlight and the elements of time.This bag will ultimately break down into nothing more than water, carbon dioxide and a very small amount of biomass.200 bags17.7cm x 22.5cm 7 x 9