The First Blocks in Home set includes 300 large building blocks, featuring special pieces along with ABC and 123 elements. The included building bag is sized for small hands, making it easy to store and transport. Toddlers can explore creative play by constructing various designs while learning colors, letters, and numbers. The blocks are compatible with other MEGA BLOKS sets, allowing for expanded building possibilities. Designed for children ages 1 and up, the oversized blocks support the development of fine motor skills, creativity, and imaginative play.