Magna-Tiles® Clear Colors are translucent and brightly colored, like stained glass! 100 translucent, colorful shapes including squares (4 large, 50 small) and triangles (20 equilateral, 11 right, 15 isosceles) Sparks hours of imaginative free play in children. Anything they can dream, they can create! Develops math, science, spatial and tactile skills. STEM approved! Safe, durable and built to last for years Ages 3 years and up Magna-Tiles® are the original 3D magnetic building tiles by Valtech since 1997. All Magna-Tiles® building sets are compatible. Set (in box) measures 12 x 3 x 9 inches Each shape has a base measurement of 3 inches / 7.62 cm