HANS Sport II Device, 20 Degree Layback Angle, Large Size (17" to 21" collar). 20 Degree layback angle. (Suits rally bucket seats/Kirkey lightweight seats etc). FIA Approved (FIA8858-2010). In a crash, an unprotected body is decelerated by the seatbelt with the head maintaining velocity until it is decelerated by the neck.
eBay