These wonderful 7 compartment sheaths are crafted for us by Sack-Ups. Protective storage for your razors. Great for traveling or storage. They are made of Stack-ups special treated material to help prevent corrosion. So they can be traveled with neatly they are not has heavily treated as our single sheaths and also single ply to roll easier compared to the 2 ply single sheaths. So it is still advisable that you keep your blades oiled.