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HITT-Shield vs. 17 oz. Hammer

2mm thick HITT-Shield "Defender" vs. 17oz. hammer.

We also have the 4mm Defender PRO available upon request. (Pro-Athletes, Military, LEO's, FireFighters, Construction, Warehouse, Oil & Gas Professionals)

2mm offers an 80% reduction in both lateral and rotational concussion and impact.  Imagine what the 4mm PRO can do!

Hitt Shield “Defender”™ Skull Cap

Patented: Under Helmet Safety Enhancement • Concussion Mitigation Protection

“Defender” (2mm thickness) is proven in an independent testing lab report to produce (4x)  more protection against head injury and concussions than any other brand on the market today. 
(Click for Report)
Defender and Defender Pro is worn directly on the head and will fit under any helmet.
At a thickness of only 2mm, our High Impact Transfer Technology (HITT) NDF™ protection product demonstrates 80%+ reduction in both linear and rotational impacts.  HITT Shield NDF™ performed better than every other enhanced head protection solution in market for use in sports, law enforcement, SWAT, riot control, military and many other applications. 

  • 4X more protection than closest market competition
  • Fully adjustable – one-size-fits-all
  • Machine washable
  • Uses wicker polyester for sweat management
  • Constructed with global patented NDF™
  • Customization Color and Printing AvailableIf you want the best impact protection against concussions, sub-concussive injuries, CTE and all other traumatic brain injuries, HITT Shield’s NDF™ protection is the solution for you.

Comfortable & Effective Head 

Protection for Sports & Professional Applications


Military, Law Enforcement, Firefighting, First Responders, Mining, Construction, Healthcare, Aerospace, Stunt Performers, Oil & Gas, Warehouse


Mountain Biking, Snow Boarding, Boxing, Field Hockey, Cycling, Skiing, Rock Climbing, Motorcycle, Baseball, Equestrian, Rodeo, Motocross, Softball, Polo, Football, Cricket, Bull Riding, Hockey, Martial Arts, Soccer,  Baseball, Rugby, Gymnastics, Lacrosse, MMA, Cheerleading, Auto Racing

HITT Shield technology is comprised of a proprietary global patented formulation of NDF™ (Non-Newtonian Dilatant Fluid) combined with other uniquely combined active elements.   Non-Newtonian fluid is a fluid whose viscosity (or thickness) varies according to the applied force or stress.  Depending on this force applied, the Non- Newtonian fluid can act like a liquid or a solid. “Dilatant” material is a material whose viscosity (or thickness) increases with the rate of strain (or force) applied.  In short, NDF™ will dramatically absorb and dissipate the energy from an impact instead of transferring that energy to the area the NDF™ is applied or worn.

HITT Shield Defender™  Defender PRO – Skull Caps are the solution for any sport or activity where head protection is priority.

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