The ProFlex has the latest features available in lightweight and flexible protection. Made to BETA level 3 standards, the highest standards possible, the individual foam blocks allow for air flow and optimal flexion while providing superior protection. Velcro shoulder adjustments paired with the standard velcro side adjustments make this body protector fit better than any other body protector on the market. When worn with our air vests and air jackets, you get every bit of safety technology there is available, in addition to, every bit of style and comfort possible. Not to mention, you are 100% within all rules and regulations for any competition on the planet. Guess that's why the world's #1 rider wears it.