Koollaces No Tie Shoelaces for Adults DIY 16pcs- Environmentally safe Waterproof Silicon- Color of Black - Colorful no tie silicone shoelaces, add fashion to your shoes! - Made of high quality environmental silicone material, safe, non-toxic, tasteless! - Easy to lace, and needn't to tie once lacing on, once and for all! - Unique grip design, can bear greater tension, so that the hole in the shoe laces is difficult to separate. - Different styles for a variety of people.