Made from high quality Polypropylene (PP) Plastic material. Safe and non toxic. Expandable with 13 pockets, along with small colored labels helps classify by subject. Fits both A4 Size and Letter Size. Durable construction with 0.6 mm thickness spectrums for long lasting use. Organize your paper, important files, contract, sales report, presentation, receipt, checks, bills, documents, vouchers, cards, paint work, homework, assignments. Lightweight, flexible, tear resistant, and waterproof. Holder features snap closure for quick access and secure your document. For office, school, home, travel, business trip. Measures 13" x 9.5" x 1.75".