Pendaflex Heavy-Duty File Pockets, 5.25" Expansion, Letter Size, Redrope, 10/Box - Ideal for frequently accessed files as well as long-term storage. Durable redrope file pockets deliver rip-proof, 100% Tyvek lined gussets plus super-tough Tyvek strip reinforcement along all critical stress points on front and back covers. Heavyweight, extra-thick 24 pt. covers resist wear and tear. Straight cut tabs.