Build and explore limitless construction possibilities with the Deluxe Building Bag by Mega Bloks First Builders. This big set is every child and parents dream come true with 150 First Builders blocks including new shapes to encourage endless creativity and open-ended play! Use the classic colored blocks to build tall towers crazy castles funny creatures or whatever else your child can dream up. The Deluxe Building Bag is a PVC-free duffle bag large enough to store all the blocks and more!