This headgear won't twist and stays in place while grappling
From stand up to ground and pound, elbows and submissions, train like it's a fight but with the safety of wearing headgear.$19
How do you size for these ?
Check out the last photo for a size guide that uses fitted hat size as well as head circumference. If you're not familiar with your fitted hat size then you should use a tape measure to get the circumference around the widest part of your head, then compare to the size chart in that last pic.