KO BROS Camp Starter Pack : GameBreaker-Pro, Under Shield & Lip Protector Mouthguard


The GameBreaker-PRO headgear and Under Shield shoulder pads provide industry-leading protection.

  • Military Grade construction
  • 100% Peripheral Vision & 95% Head Coverage
  • Up to 75% Reduction in Concussion Risk
  • Rated 5-Stars by the Virginia Tech Helmet Testing Labs (Pro Model)
  • Machine Washable (air dry)
  • All equipment is fitted and sized specifically for the lineman position

View sizing chart below or on this page for instructions on how to measure!

Currency conversions are estimated and should be used for informational purposes only.


The GAMEBREAKER-PRO powered by D3O is the ultimate soft shell helmet for comfort and protection. The GameBreaker-PRO uses the same industry-leading protection materials as the GameBreaker helmet, combined with world-exclusive D3O Impact Protection technology to offer the greatest protection upon impact. Improving upon the original GAMEBREAKER line of headgear, the Gamebreaker-PRO provides significantly more impact protection thanks to the power of D3O reactive smart molecules, and an improved self-adjustable rear pad that gives more protection to the back of the head, further reducing the risk of concussion!

GameBreaker-PRO Headgear is the only Soft Shell Helmet to receive a 5-Star safety rating from the Virginia Tech Helmet Labs and provides protection to 95% of the player’s head while reducing injury risk by over 75%. (Based on testing done by Virginia Tech Helmet Labs to determine the reduction in linear and rotational force transferred to the player’s head.)


The Gamebreaker soft shell protective headgear comes with an adjustable chin strap that keeps the helmet comfortably secured on without the risk of flying off during activity.

*View the sizing chart below or on this page for instructions on how to measure!


GameBreaker-PRO Headgear


GameBreaker Under Shield Practice Pads


Additional information

Weight 3 lbs
Dimensions 12 × 12 × 18 in
GameBreaker-Pro Size

XS, S, M, L, XL, 2XL

Under Shield Size

S, M, L, XL, 2XL, 3XL