Snap-together grid blocks provide wonderful ways for kids to explore architecture. In molded plastic squares with interlocking sides, they're easy to handle even for the smallest hands. With 48 pieces, it's simple to create an entire village or tunnel system. Molded plastic grid block set includes 48 pieces. Kids ages 18 months to 5 years will enjoy the bright mix of primary and secondary colors. Best for ages: 18 months to 5 yearsPerfect for indoor or outdoor playHeavy-duty blocksCreates solid pathways for children to walk upon, tunnels for them to crawl throughSquare footUsed for simple activities that introduce linear and area measurementSix bright primary and secondary colors that will continually look new because the colors are molded right inEach set includes square blocks, both solid and see-through, as well as triangular blocks for pathway corners and pointed rooftopsMixed colorsAvailable in various sets12 in. W x 24 in. L x 15 in. H per block (34 lbs.)