An Arizona Cardinals Custom Speed Authentic Hydro NFL Helmet hand signed by David Johnson. The item and signature are in excellent condition. David Johnson is a NFL Running back for the Arizona Cardinals. He was drafted 3rd round in the 2015 NFL Draft. In college David played for Northern Iowa. He is a Pro Bowler, & a 2016 First Team All Pro. AUTHENTICATION: The item is accompanied by a Certificate of Authenticity – Serial Numbered and Databased Hologram – Picture of David from the Signing –