Here are the best off road neck braces available.
chase in UT
Been very happy with the fit and feel this beck brace offers. Thankfully I haven't had to crash test it yet, but it definitely gives a good sens of safety while riding. It hasn't affected my range of motion at all. Only time I notice it is when i'm off the bike with my helmet on. But once you're in the riding position, you forget it's there. Only reason I didn't give it 5 stars is because I don't like their chest strap all that much. It holds it in place well but doesn't work under the jersey.Read All Reviews
ROLLAND in AZ
This neck brace is the only one I have ever owned (other than the foam donut) so I don't have a lot to compare to. It took a little getting used to, but now I don't mind it and have a little extra comfort in the belief that this would help in the event of a crash. Jerseys don't easily fit over it also.Read All Reviews