Click n' Play Blue Building Brick Baseplates - 10" x 10" - (Pack of 4) Tight Fit-Lego Compatible 4 pack 10x10 inch blue baseplates compatible with Lego and other major building block manufacturers Keeps your creations together and easy to carry and display .Guaranteed tight fit Don't run out of plates again with this 4 pack Great for group building. Recommended for age 3 and up. Not for DUPLO sized blocks High quality and tight fitting guaranteed