Perfect size as I use one for each of the Micron pens I use in my Tangling and/or art work. This way I don't start using a lot of newer pens all at once. Great size.
I use rubber bands to group small pairs of items I sell on the interwebs. Some stick around for long periods of time and often the rubber bands oxidize and lose their elasticity and then break with residue sticking to my items. I hope this won’t happen but it’s too soon to say. Regardless these rubber bands were the right size and right price and made an excellent addition to my supply cabinet.