Material: made of PP material, durable and smooth, when you snap the links together, they will emit a satisfying click sound, full of fun. Size: the wacky track is about 11 inches in length after spreading, good as gifts to your friends and kids. Colorful and random: these wacky tracks are green and orange, red and blue, green and blue, they all come randomly. Snap and click: each of the 24 links can pivot and lock into 5 positions, you can create any shapes you want, bring challenges and fun to your fingers and brain. Package include: 18pcs wacky tracks, they can help children and adults reduce stress, increase focus and attention, benefit for intelligence and imagination development.