Arione r3 is for the snake flexible spine if you are very spinally flexible far less than 90 degrees between your straight legs and your back when bending over as far as you can keeping your legs straight a shouldersrsquo width apart you are a snake you achieve the performance position using your spinal flexibility alone not rotating your pelvis at all you will like the flat narrow and long shape of the arione shell carbon thermoplastic composite with wing flextrade f