Material: the wacky track is made of PP material, durable and smooth for playing, when you snap the links together, they will emit a satisfying click sound, full of fun Size: the snap and click wacky track is about 11 inches/ 28 cm in length after spreading, suitable size for children and adults, good as gifts to your friends and kids Colorful and random: these wacky tracks have mixed colors such as green and orange, red and blue, green and blue, they all come randomly, please make sure do not mind before purchase Snap and click: each of the 24 links can pivot and lock into 5 positions, you can create any shapes you want, such as letters, numbers, symbols, etc..bring challenges and fun to your fingers and brain Package include: 6 x wacky tracks, they can help children and adults reduce stress, increase focus and attention, benefit for intelligence and imagination development, great for party bag fillers and party supplies