This 100 piece set of Alvin Poster and Foam Bags is a must have for protecting and storing or moving valuable works from place to place. Keep dirt, fingerprints, smudging, rain and sunlight from damaging foam boards, presentation posters or other art pieces. Sized at 26" x 38", these protective bags will cover all of the most common sizes of poster and foam boards as well as other art pieces. These opaque protective bags are made from .00275 mil. polyethylene, so they are very durable and ideal for transporting important pieces. Don't risk another ruined project or presentation when it can be easily prevented with these high-quality Alvin Poster and Foam protective covers.