Biodegradable sheet protectors incorporate an additional additive that allows them to biodegrade in landfills while leaving no toxic residue. Three-hole punched sheet protectors are designed for letter-size document storage in standard three-ring binders. Top-loading design eliminates the need for hole punching. Archival-quality polypropylene means print won't stick to sheet protectors. Each standard-weight sheet protector meets the EPA definition of biodegradable.