Four-Tier Plastic Storage Organizer offers a colorful, functional solution for organization for your classroom. Toys, arts and craft materials, and classroom supplies of any kind will easily fit into the included 12 bins - four large and eight small with scoop fronts. Bins are easy for little hands to carry. The blue rack features metal support bars for added durability. Organizer feet are specifically designed for stability to keep everything upright while bins and their contents get tossed around. Convenient cut-out handles located on each side help to easily move the organizer from room to room. This organizer is compact in size to fit any space yet spacious in storage. Rounded corners on the storage bins and heavy-duty plastic organizer make this unit safe for children ages 3 and up. Each small bin measures 12" wide x 8-1/4" deep x 5-1/4" high. The size of each large bin is 16" wide x 12" deep x 5-1/4" high.