Primary Concepts, Letter Formation Sand Trays Set Of 4, Beige,Pc-2012LETTER FORMATION SAND TRAYS 4 SETFeatures of Primary Concepts, Letter Formation Sand Trays Set Of 4, Beige,Pc-2012 CREATIVE EXPRESSION: The light sand paired with the contrasting dark blue laminate bottom allows for your child to express their creativity through the art of sand dr..