What Pros Wear: What Helmet are the Bosa Brothers Wearing? | Vicis Zero2 Trench
Nick Bosa in the Vicis Zero2 Trench. picture by using 49ers.com. Nick and Joey Bosa
Helmet
What Pros Wear: Guardian Caps | What are Those Helmet Covers Being Worn in Practice?
What is a Guardian Cap? Steelers wearing the Guardian Caps. picture by means of steelers.com.