What type of rubber band is better

While preselecting ponytails for our fourth wig, I noticed that one of the rubber bands used to tie a ponytails broke. It's those flat rubber band used for tying hair that would always give way. 

Flat rubber band tends to wear easily after a number of uses. That's the reason why I would always retie with at least 2 normal rubber bands whenever a ponytail is received.

I know some people might think that normal rubber band may damage the hair, not when you know how to tie a ponytail that is not on your head. It's a totally new experience.