Fortresses, castles and more—the building possibilities are endless with whimsical blocks that inspire the imagination! The 21 easy-stack wooden blocks come in an assortment of sizes and shapes—from arches and windows to spires and stairs. Plus, the 16 acrylic cubes feature a captivating translucent design, so light shines through in a rainbow of colors as children build. Kid-safe set includes a 13" storage tray.