Many do have extra layers from other parts of the flower.

How do they provide an extra layer of protection against fraud?

What else can you do to add an extra layer of protection?

Such a system would create an extra layer of bureaucracy, making development even more difficult.

That would buy him some more time while he added extra layers of security behind it.

These extra layers are usually associated with higher rolling resistance.

I've been carrying around an extra layer that I want to shed.

That would add an extra layer of protection in case you were to lose your key.

Some suits have extra layers added for key areas such as the lower back.

Just put an extra layer or two under your normal cycle jacket.