LEGO Compatible Baseplate Board (4-pack) Large Gray 10"x10" Brick Base Board Plate for Building, Activity Table, and LEGO Wall 100% LEGO COMPATIBLE - Perfect fit for all LEGO and other building blocks. Tight fit and never warping, but flexible enough for easy removal of blocks FREE SHIPPING - Delivered quickly for free via USPS Priority Mail BUILD BIGGER CREATIONS - Never run out of space because you don't have enough baseplates. These base boards let your buildings get bigger and keep forever CREATE LEGO DECORATIONS - decorate a wall and create large Lego objects and great for Lego Mosaic pictures Never run out of space to build and make large creations that can be shared. NEVER RUN OUT - The biggest reasons kids get bored with LEGOs is because they don't have enough boards to build on. Our baseplates are affordable to have many in stock ready to be used. Never run out of baseplates.