【Safety & Premium Material】The strange track is made of high-quality PP material, which is durable and smooth to use. When you put the links together, it will make a snap-click, full of fun. They are a mixture of yellow, green, red and black with random colors. Please make sure you don't mind before purchasing. 【2 in 1 Innovative Design】 These deformable chain DIY toys are the innovative design of Wacky Tracks. Manipulating the hinge pieces is relaxed, and when you do, they make a quiet click. You can create any shape you want, bringing challenges and fun to your fingers and brain. 【Stress & Anxiety Relief】 They can help us reduce some stress in life, study and work, relieve everyone's restlessness, increase attention and creativity, which is conducive to the development of intelligence and imagination, especially for people with Autism ADHD. 【Wide Application】 These strange tracks are small, weight about 25g, and easy to carry. It's easy to put in your pocket, knapsack and anywhere else. It is very suitable for classroom, travel, driving, camping, flying, etc. 【Perfect Gifts】 These deformable stress toys are perfect gifts for children and adults, such as Thanksgiving, Christmas, Valentine's Day, birthday, Easter, Halloween, Children's Day, etc. And it is also very suitable for Christmas stocking stuffers, Easter basket fillers,party favors supplies, classroom supplies. 30 pcs sensory fidget toys.