The Elastic Tie-Free and Wash-Free Silicone Shoelaces (Colorful Black and White) The tie-free shoelaces for children are made of high-quality and environmentally friendly silicone material It is safe non-toxic and odorless A mix of colors is suitable for children full of vigor and vitality The convenient and comfortable shoelaces will not only solve the problem of shoe-tying but also prevent children from being tripped With easy wearing the safe and reliable shoelaces let parents rest assured The shoelaces have strong overall tensile ability They are not easy to break and very comfortable to wear The colorful design meets the needs of different color matching Let your shoes cooler and more personalized Henceforth there will be no trouble tying shoes It can make automatic adjustment according to the size of the feet so as to give your feet the most comfortable feeling Each shoelace is made of high-quality food-grade silicone and has super strong elasticity It can remain unharmed after 100,000 times of the tensile testing and will not break and fade even under the stronger stretching Besides the shoelaces are resistant to dirt and wash-free The silicone shoelaces use food-grade silica gel a kind of inorganic polymer colloid material polymerized by silicic acid Its main ingredient is SI02 NH20 whose content is above 98% It is non-toxic odorless and stable in chemical property Normally it does not react with any acid salt except the caustic alkali and hydrofluoric acid