Great bikes! Ordered a frame form Materia bikes nearly 4 years ago. The bike is still in perfect condition and I am really enjoying it. If we are talking about bike stiffness and vibration damping - the front triangle (Top-tube, Bottom-tube, seat-tube) is made from solid wood, that is why I found the ride much smoother compared to my old carbon or aluminium bikes. - the rear triangle (seat-tube, chain-stay, seat-stay) is made from laminated wood so the rear end for the bike it is really stiff and hard, what is good for performance.