BEST COLOR COMBINATION: Different from other products, we have studied a lot of data and added three best color combinations for this toy. 18 pack include 3 x green and orange, 3 x green and blue, 3 x blue and orange, 3 x red and white, 3 x red and dark gray, 3 x white and dark gray. The new color combination allows children to combine more creative shapes. SAFE & PREMIUM MATERIAL: New wacky track is made of high quality PP material, durable and smooth rotation, and enhance the crisp click sound when twisting the link, make the whole creative process more fun. IMPROVE CHILDREN'S MULTIPLE SKILLS: Each of the 24 links can pivot and lock into 5 positions, so you can create any shapes you want, such as letters, numbers, animal and more. bring challenges and fun to your fingers and brain. Not only help kids concentrate, improve their practical and reasoning skills, increase creativity and expand their thinking, but also help promote a sense of calm, reduce stress and anxiety. WACKY TRACKS TOYS PERFECT GIFT: These wacky tracks toys is a perfect gift for children, suitable for all kinds of holiday gifts, including party supply, Christmas, birthdays gift, Halloween, classroom prizes etc. KID-SAFE AND QUALITY ASSURED: These nontoxic and no smell educational toys are safe and fun for kids; We will provide a full refund or free replacement, If you find any defects in the package you received.