Protect, store, and transport up to four CFexpress Type A memory cards with the Media Tank from Angelbird, which features an aluminum exterior and a precision-cut foam interior for protection against scratches, bends, breaks, water, shock, dust, heat, ESD, magnets, and X-rays. There is also a durable Lock-Solid locking mechanism that prevents the case from accidentally opening. If you'd like to attach the Media Tank to your backpack, or secure it with a padlock, there are double ring loops on either side of the front end.