The catlike olula road helmet features their mps evo adjustment system which allows you to find the perfect fit for your unique head shape the dual flow ventilation system uses 39 strategically placed vents which work together with internal channels to draw cooling air over the head using catlikes expertise in aerodynamics ventilation and comfort the catlike olula punches above its price point and is perfect for amateur racing strap changing system the first unique feature of the olula is