Plus-Plus is one shape with endless possibilities. The 2600 piece tub is a great way to get started with Plus-Plus. 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 5-12.Includes:• A durable, re-closable tub• Idea Guide Book• 2600 pieces (Mix of Basic, Metallic Gold, Metallic Silver, Lime Green, Dark Red, and Turquoise colors)• 10 Chassis Baseplates• 40 Wheels