you write with anything washable...it should come off. the fish mouth are magnetic and it is very easy to get the fish on the line. on the "hook" which is plastic, it can hold the worms and the fish. the worms stay on the hook, they kind of wrap around it. the vest fir my son perfectly, he usually wears a small size in boys to give you an idea. after playing with this set outside the water, i decided to fill the bath tub with water and try it there. the fish float which i thought was great. it made is easy to catch the fish. my son had 