Made in the USA from 100% recycled plastic milk jugs that save energy and reduce emissions, this 8-piece set contains no BPA, PVC, or phthalates. With 8 colorful shapes sized for small hands, the sorter helps develop recognition of shapes and colors while developing hand-eye coordination and motor skills. Each piece slides into the cut-outs on both the top and bottom, which opens with a simple twist to let the pieces out again!