PREMIUM MATERIAL: The file box is made of thickened PET material, which is durable, sturdy, no smell, dustproof, moisture-proof, strong weight bearing, not easily deformed, and easy to clean. Our storage containers can keep files in good condition, no curling or damage. SECURE AND PORTABLE: The storage box features double snap-tight latches made of ABS material, which closes tightly to secure the contents. The plastic storage case with retractable handle are easy to carry. A great companion for your traveling, business activities and school attending. SEE-THROUGH AND STACKABLE DESIGN: The clear storage file box allow easy identify the contents from any angle without opening the box. The plastic lid with grooved design allows the storage box to stack more stably for efficient storage and space saving. LARGE CAPACITY: Stackable storage bins size: 14.4" x 9.4" x 2.6"/ 36.5 x 24 x 6.6cm. The flat storage bins can hold standard a4 paper, files, notebooks, photos, scissors,