Christmas Advent Calendar Surprise Building Block Set Style:Model C (12 Holes) and the surface is smooth

and the surface is smooth and flat

providing hours of entertainment for children of all ages

effectively breaking down and dissolving stubborn mineral deposits and hard water stains

it is easy to rinse out after use

and athletic activities—offering superior moisture-wicking

Christmas Advent Calendar Surprise Building Block Set Style:Model C (12 Holes) and the surface is smoothExperience a magical Christmas countdown with the Christmas Advent Calendar Surprise Building Block Set! FEATURES Educational Toys and High Quality Materials: Made from high quality, eco friendly ABS materials, this set prioritizes safety and durability. The blocks are designed to stay securely assembled so they won't fade or break easily. Kids can confidently immerse themselves in creative building and have an unforgettable festive experience.