Backpack holds the perfect building toys for 3 years old boys and girls. Use different tools and colorful components to build beautiful models like airplanes, racing cars, scooters, helicopters, balance scales, tanks, trolleys, windmills, and any other creative shapes you want. A great learning toy to develop kids' hands-on ability and enrich their imagination, keeping your little one busy building all day long. This construction toy is made of premium solid wood with non-toxic water-based paint and non-sharp edges, protecting kids aged 3-5 years old from being hurt. The tools kit set with suitable sizes is easy for kids to grasp and play with. It is a learning toy to enhance kids' multifaceted educational capabilities. Beneficial for 3, 4, 5, 6 years old kids and above to improve the ability of color & shape recognition, counting, and fine motor and help promote hand-eye coordination and problem-solving skills. Your kids can gain better development during playing. It is conducive to kids’ intellectual development and early education enlightenment