To prevent mold on the worn shirts, we highly suggest taking out the shirt after you receive them and letting the shirt feel the fresh air for a couple of days. When storing the shirt, make sure that the area is cool and dry with low humidity.
If you do not have a 'dry cabinet', it is preferable to hang the shirt. If this is still not possible, we advise placing silica gels (drying agent) in the box to avoid too much humidity from being trapped.