Breathable textured knitwear is very soft for all-day comfort. UA Siro provides greater flexibility and better regeneration, the material is extremely soft and breathable. Adjustable closure on a two-colour strap. Improved back hole for more ways to wear your hair. Embroidered logo. UA Free Fit: The pre-curved visor and unstructured front conform to your head for a sleek, low-profile fit.