High Quality: Made from the safe, durable plastic, as the more sturdy than other classic base plates, our baseplate have a more long lifetime Size and Application: Measures 10" (25cm) x 10" (25cm), Classic standard size, compatible with all major building block brands that accept standard building blocks for small particles Durable and Humanization Design: Good toughness, durable, not easy to break and deform, Compact and not easy to fall. More number of plates format allows child to build and