The X10 U is legal for all levels of play. The “U” in STX means it is universal; like the “X” in Warrior…
X10 heads are very similar to the good old Xcalibur in appearance and design. The X10 is a little stiffer than your average head, which defender tend to like a little more. We also like this for the average midfielder who wants a little extra strength in his stick, maybe for checking. Many string holes in this head allows to put in a great pocket. We find that the mid and low pockets fit this head best.