Features: brand new and high quality Educational Training STEM Puzzle Block Toy: The changeable snowflake building block toy with great for creative educational training for kids, improve their abilities of hand-on ability & fine motor skills, cultivate cognitive ability of space thinking, stimulate their problem solving skills and further right brain development. for Ideal Gift for Kids: Suitable for kids as birthday gift, Christmas gift, and encourage them free to explore their small world and improve their for creative imagination & building skills, a perfect brain game for kids. Selected Qualification Material: Made of qualified plastic and 3D cutting to ensure the interlock smoothly, no burrs as well as wear-resistance, non toxic soft color and safe friendly to your kids for play. Sensory Stimulation Toy: Colorful and 360 degree rotating puzzle pieces after locked, not easy to loose, support multifunctional method to for play, easy DIY 3D buildings, stimulate children's desire to explore, the concept of teaching in fun to attract kids' concentration, evoke their space logical thinking and skills, exercise and improve their hand & eye coordination. Snowflake Interlocking Building Block: Equipped with snowflake shape pieces with accessories, interlocking design to combine the pieces together and free build the shape they like, well stimulate children's space imagination and building skills. Package Includes: 1 Set Interlocked Building Block Puzzle Toy Specifications: Product Size: approx. piece size 5cm/1.96 inch Material: Plastic Style Option: A(150 pieces)/B(300 pieces) Net Weight: approx. A 400g/0.88 lbs, B 671g/1.48 lbs note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.