Made of 100% recycled material, this file pocket is ideal for the environmentally conscientious office. File pocket is closed on three sides to secure and protect your documents and manage bulky records. Rollover Tyvek? reinforcement at the top of the sides makes them virtually tear-proof. Straight cut tab. Expandable File Folder Type: Elastic Cord Closure File; Size: Letter; Width: N/A; Height: N/A.