Measuring 4.3" x 1.5" and only 0.08" thick, this ultra-thin titanium comb is an indestructible go-anywhere tool for keeping your hair and/or beard in check. It weighs almost nothing (merely 0.05 pounds) and can be kept in a pocket, purse, or bag without any fear of damage. Should make a great lifetime addition to your travel kit.

Get it for $25 on Amazon.