The possibilities are endless with this set of 4 heavy-duty multi-purpose trays in 4 colors. Keep art projects neatly contained and organized; large enough in size to fit a standard 8.5" x 11" piece of paper or a worksheet with plenty of room for manipulatives to fit inside tray on the sides. Suitable for finger painting projects, collaging, clay or playdough, and other messy art projects. Or use for individualized sensory activities filling trays with, water, sand, plastic sensory pellets, beads and more. Trays measures 12" x 16" x 1" deep" .