Children will love to build and stack for limitless fun with this big building bag of plastic blocks. Bright, primary-colored blocks encourage hands-on exploration as children use their imagination to create. Large pieces allow little fingers to easily grasp onto each piece as they play and assemble. When playtime is over, zip the blocks up in the eco-friendly bag and stash them in the toy box until the next adventure. 80-piece set is compatible with all Mega Bloks First Builders sets. First Builders blocks are designed for children ages 1 to 5.