Set of 360 colorful translucent pipe tubes in 4 "tech-y" shapes (all approximately 1-1/2-inches long) easily slide together to form imaginative and whimsical structures. Promotes perceptual and fine motor development and encourages cooperative play. Made of soft, durable, washable plastic in 6 different colors. Great to use on a light panel. Storage bin with locking lid included. Recommended for 3 years and up. EARLY STEM: Straight, "T", 4-way, and curved tubes invite preschoolers to design their own unique plumbing solutions. Ideal for exploring spatial relations and early engineering concepts. PIPES SLIDE TOGETHER: The 4 different pipe tubes (all approximately 1.5 inches long) connect smoothly to form fantastic constructions that twist and bend. PROMOTES PERCEPTUAL AND FINE MOTOR DEVELOPMENT: Preschoolers will feel a real sense of accomplishment as they discover how to fit the tubes together. Their structures will grow more complex with twists and turns as tubes are added. Construction complete? Trace the imagined flow of water from start to finish. ENCOURAGES COOPERATIVE PLAY: Bright colors and "tech-y" shapes invite everyone to join the building fun. 360 colorful translucent pipe tubes mean there's plenty for everyone! DURABLE, SAFE PLASTIC: Pipe tubes are made of soft, durable, washable plastic so they're super easy to slide together. Ages 3 and up.