TOY AWARD: This system of both large & small interlocking blocks won the German Spiel Gut Good Toy Award for its unique design. The whirligigs function as wheels that spin and also create models with spinning parts giving your child more ways to play after building. SUPERIOR DESIGN: The variety of shapes and sizes which can interlock with each other in various ways allows your child to to build a much broader variety of unique models than sets with pieces that only attach to each other one way. PLUS storage container allows for easy clean up! Manufacturered by BabyKeeps. SAFETY TESTED: The colorful plastic pieces in our building blocks set were thoroughly tested in a U.S. Consumer Product Safety Commission certified lab to comply with all U.S. regulations to ensure they are 100% safe from any harmful chemicals including lead phthalates and BPA. Blocks come in a plastic container for fast clean up and storage and a handy illustrated guide. Also available are step by step 'how-to' videos for a dozen models to get you started. 5-YEAR EXTENDED WARRANTY: Included at no charge. You can buy with confidence and peace of mind with our no risk replacement parts warranty. FOR PARENTS THAT WANT TO GET THEIR KIDS USING LESS SCREEN TIME: Encourages logical thinking and problem solving skills (IQ); social development via bonding & teamwork (EQ); and imagination & creativity (CQ) as well as enhancing fine motor skills and hand-eye coordination.