Pendaflex Color Jacs Transparent File Jackets, Letter Size, Poly, Clear, 50 per Box (61504EE) Poly Color Jacs transparent file jackets feature thumb-notched opening, sealed side and bottom and textured surface. Letter size. See-through folders. Thumb-notched opening, sealed on side and bottom. Lightweight, static-free poly will not transfer copier toner to jacket. Textured surface cuts glare and static.