HIGHT GRADE MATERIAL – Made with premium, high quality ABS materials that have been tested to comply with all u.s. toy safety standards, will not crack or break easily, free of lead and cadmium, safe for your kids to enjoy the playing time. 101PCS STEM BUILDING BLOCKS – Comes with 101 pieces different colors & size of building blocks, challenge your kids to build creative designs, trucks, transformers, helicopters, robots and much more! This toy set is sturdy and easy to pick up and build. Included a storage box, collect and store all blocks conveniently in one place to keep dirt and dust away. LEARNING IN HAPPINESS – Our 101-piece set comes with 10 different size connector pieces, your child can build a solid foundation in Science, Technology, Engineering and Mathematics by making different shapes, create different concepts of their imagination. UNBEATABLE CHILDREN GIFT – Looking for an amazing gift for your children, nephew, or grandchildren? These great toys will be the kid’s favorite thing to do at home. Great for birthdays, Christmas or any other suitable occasion. OUR PROMISE – Every purchase includes a 30 days Money Back & 12-month Quality Guarantee & Questions Respond within 24hs,we will try our best to meet your satisfaction.