Originally Posted by randya
I shop for old helmets all the time at thrift stores. There are many good old helmets out there. Unless it's been in a wreck, which is usually obvious, or it's had UV or some other kind of damage to the shell, which you can test for by squeezing the helmet...
That is really bad advice. The foam of a helmet can be cracked with almost no sign on the outside surface. You can't squeeze a helmet to tell if it is still good. Foam get's brittle over time and doesn't afford the same degree of protection as a new helmet.
-s