New. Factory sealed. The Slab Dream Lab Mosaic Baseplate 4 Pack is a set of 12x12 baseplates designed for building toys like LEGO. This product, released in 2023, includes 4 plastic baseplates in a box packaging. The baseplates are compatible with all major brands and feature a mosaic theme, making them a versatile and creative addition to any building toy collection. Ideal for builders aged 3 and up, these baseplates offer a unique and colorful way to expand the possibilities of imaginative play.