Silicone bracelet is made of the environmentally friendly silica gel material, which can be said to be one of the environmentally friendly silica gel ornaments in the world. There is no harm, the silica gel bracelet is made of environmentally friendly material, so it is an environmentally friendly and non-toxic products.  For example, a glow-in-the-dark bracelet is only added by some relevant luminous materials which are non-toxic for humans.