helmet Q
It is designed to withstand one impact from over four feet with your head inside. If there is nothing inside the impact absorbing liner (Single or Dual Denisity Foam) would not be compressed by the drop. It might scratch the outer (Painted) shell but as long as the shell is not cracked you would be okay. ALL testing (DOT, SNELL, or EEC) involves a drop with a head shaped weight inside not a empty helmet.

Read more: http://wiki.answers.com/Q/How_high_u...#ixzz1uTbkqgyX