Stimulate Imagination And Creativity:Can stimulate children's creativity and imagination can say straw into any shape such as house basket windmill car etc Safety And Health: Non-Toxic BPA-Safe Lead-Safe Phthalates-Safe and Skin-Safe! No toxic odor safe to use Manufacturered by Siwo. Broaden The Knowledge :Help Support Your Child With Early Experiences Involving: Engineering Construction Critical Thinking Reasoning Mathematics Science & Simple Mechanics. Invest in Your Child's Fututre Today! Service-Our products have a 3-year shelf life. If you are not satisfied with them please feel free to replace them or refund them at any time Exercise Coordination: Featuring 800 piece straws and connectors with various color which improve your childs sensitivity to color and promote hand-eye coordination.