1 the silicone rubbands with many colors and shapes 2 non-toxic 1 it can be made different shapes , like animal , tree , car , plant , musical instruments, etc 3 it is very good for the development of children’s imagination 4 woman can use it to tie thire hair 5 light weight , it is easy for delivery , 6 it never go out of shape 7 most competitive price with good quality