The 661 Evo Compression SS Jacket Guard is 661's most technical jacket with the highest level of impact protection available. With strategic D3O® pads and panels, vented compression fabrics and mobility patterns; the Evo family stands alone.D3O® material hardens on impact yet flexes while riding. Fit and technology aside the redesigned EVO collection helped launch the new PADLOCK Connection System, which completely prevents pad migration before and during an impact. With EVO and PADLOCK you will never have to compromise ever again.The PADLOCK connection system is our newest technology that inner-connects protection pieces so your pads won’t migrate while riding or in the event of a crash ... More info