For equestrians, we recommend the youth size for under riding helmets which tend to fit more low profile, and the adult size for other helmets (quads, snowmobiles, football, etc.) for more full coverage.
The Pro design was engineered with a $100,000 grant from The National Football League. The Pro cap has improved capabilities over the standard 2nd Skull cap.
Testing on the pro-style cap under the keen eye of the NFL proved that the new cap is in the same heat index category as a regular skull cap with no protective material. 2nd Skull pro style cap has the same super thin 2 millimeter XRD panels that absorb impact on contact. The thin profile makes helmet fitting a seamless experience. The player can put the cap on just like a normal skull cap and immediately play.
Pro-style also has a new outside fabric that adds extra slippage of the helmet at contact. Biomechanical testing proves that the more the helmet can rotate on the cap the less rotational force is put on the player. The pro-style cap, with extra breathability, and the same super important impact protection is a must for all athletes that use a helmet.
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