Just a caution note. One of my plastic Rescue mirrors (Mil-Tec by Strum), came with sticky backed black plastic protective sheet. It had a removal tab and everything. I placed it on the mirror and carried it for about 2 years. I recently wanted to test the mirror and it took me about 30 minutes to remove the sticky plastic. It had essentially lost its removal characteristics. Once I had the black plastic off, I had to laboriously and carefully rub off the sticky residue to get a clear mirror.

I now carry this mirror in a zip lock bag only. The protective coating would have essentially made field use a huge pain, and the mirror was essentially out of service for quite a while before I could use it.

My Gerber mirror (now Ultimate Survival) came with a similar protective plastic that I fortunately never used.

I keep my Rescue Reflectors 2x3 in its heavy plastic bag in a Mission Wallet to keep it both handy and protected.