Classroom Organization: 10-pack of heavy-duty plastic paper trays with translucent lids to help keep playrooms and homes organized and clutter-free; designed with easy-grasp edges for transporting Versatile Storage: These deep tray bins have a 9" x 12" interior that stores letter-size papers and workbook assignments for classroom storage; for sensory play, bins hold approximately 1 US gallon Multipurpose: Colorful storage boxes with lids are great for creating a curated organization system by labeling or color coding; paper trays nest for space-saving storage when not in use Certified Safe: Paper organizer is GREENGUARD [GOLD] Certified for low VOCs, CPSIA compliant, each plastic box features soft rounded edges for safety, and is constructed with recyclable material Product Dimensions: Storage bin measures 13.75" L x 10.75" W x 3.25" H; interior measures 12" L x 9" W x 3" H; Adult Active Engaged & Direct Supervision Required