The BIG size is perfect for smaller hands or bigger ideas. Kids will learn to create in 2D or 3D, encouraging open-ended, creative play. It's a perfect STEM toy to develop fine motor skills, focus and patience. Great for classrooms or large groups of young kids, tweens or 'kidults'. Suggested for ages 2 years and up. Includes: a durable, re-closable tub, Idea Guide Book, 200 BIG pieces (Red, Orange, Yellow, Green, Blue, Purple, Gray, Black, White, Pastel Pink, Pastel Yellow, Pastel Purple, Pastel Green, Pastel Blue, Neon Pink, Neon Yellow, Neon Orange, Neon Green, Neon Blue, Transparent) , and 2 BIG Baseplates (1 White and 1 Green).