The Halo Flexfit mesh cap combines Flexfit technology with adjustable features to ensure a fit that is tailored to you. It includes the Halo sweatband, which can be positioned either up or down. You can wear the cap normally during regular activities. However, when you start to sweat excessively, just lower the sweatband and allow the highly absorbent fabric, along with the SweatSeal channeling properties, to take effect. This means no more sweat dripping down your face, into your eyes, or onto your glasses. The exceptional comfort and functionality of this cap are truly impressive.