<https://inktothenines.com/shop/1585/classic-black-rolling-pen-case-with-detachable-pen-bag/#product>
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"Made from fabric with two buttons for more flexibility. It can contain up to 18 pens. In addition, it has a small pen bag with the possibility of using separately. Washable. The internal liner is from rep which is very thick and strong."
<https://inktothenines.com/shop/1585/classic-black-rolling-pen-case-with-detachable-pen-bag/>