The BIOBAG 4X5" is a 4 x 5-inch Biodegradable ESD Bag, made of polyvinyl alcohol (PVOH)/starch film is inherently static dissipative. The anti-static properties are not temperature and humidity dependant and are not affected by scratching or abrasion. PVOH is a readily biodegradable, water soluble polymer and completely degrades in a composting environment. It has no harmful residues and ultimately biodegrades to naturally occurring substances.