This paddle is very understated, should be heard more. Kevlar surface is the trend now, I own a Kevlar blend paddle, I believe pure carbon fiber has its own benefit, which is crispy and responsive feel. A lot of people are after power, but to most of us, a balanced paddle leaning to control and being forgiving is all we need, X4 is such a paddle, it doesn't excel in any category but still in top tier of power, control, spin and sweet spot except I wish the pop could be a little more but it's double-edged sword, too much pop hurts control. A good feature of this paddle, often neglected, is that it's very stable with least vibration, maybe due to 11-layer construction. The quality is excellent. The cover is the best I've seen, faux leather with fleece lining. The paddle is a little heavy but in good way, very solid feel, you can see the quality in details from the surface, edge guard to handle. After 2 months of playing, it doesn't lose much of the spin, the paint of the logo doesn't even chip any little.
