Description: Made of quality material. BPA free. no odor or any sharp edges and corners. smooth surface, safety for all ages babies. Cute stacking cups toy come with 7 colors, have unique hollow patterns and each cup from small to large; max dia 8cm, min dia 5cm. Not only can play front and back stacking games, it also can use as a bathing toy. hollow design allows children to see the water flowing out of patterns of different shapes, its perfect for playing in the shower or swimming. Stacking and nesting activities encourage baby to use their problem solving skills. also develop childrens hand-on ability, color perception, digital cognition and shape recognition while they playing stacking game. Best gift for child and toddlers, no matter boy or girl. Specification: Material: Silicone Size Chart: Max Diameter: 8cm/3.15inch Min Diameter: 5cm/1.97inch Package Includes: 7 Pieces Stacking Cup Toys Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.