The BIG size (50mm Bricks) are especially well-suited for preschools and all other early learning environments. Little hands will find the larger chunkier size (2.5x larger than Plus-Plus Mini) easier to hold, play and construct with, while being completely safe for all ages.This Pastel Colour 15 piece pack comes with mixture of purple , white, lime green, yellow, and pink.All Plus-Plus bricks are free of phthalates, BPA and PVC