Features: Colorful blocks can improve kids' interest in learning. Building Toy requires much concentration and diligence when interlocking and helps children learn to understand in the building process. Our blocks toy is a great way to develop thinking, concentration and practical skills. Perfect for babies 1-3 years old. Crafted for little hands, these soft, flexible, and child safe blocks are perfect for building so many structures, enhancing fine motor skills and spatial awareness. Adults can also play with kids to make it better. Improve parent-child relationship. Specifications: Component: Plastic Color: 3 Option Size of 100pcs: Approx.3x3cm/1.18x1.18inch Size of 60pcs: Approx.3.6x3.6cm/1.42x1.42inch Size of 45pcs: Approx.4x4xcm/1.57x1.57inch Quantity: 100pcs/60pcs/45pcs Package Includes: 100pcs/60pcs/45pcs Building Blocks note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.