Industrial bags are made of durable, heavyweight polyethylene material to withstand a variety of environments. Clear, heavy-gauge bags let you store everything from computer reports to paper clips. Airtight and waterproof when they are secured with the Poly Zip seal, ensuring that vital information stays clean, visible and easily accessible. Bags are punched for easy hanging purposes. Load Orientation: Top Sheet Protector Type: Shop Ticket Insert Size: 8 1/2 x 11 Materials: Polyethylene.