The Under Armour StealthForm Uncrushable Adjustable Hat is the definitive headwear solution for the athlete on the move, combining groundbreaking packability with high-performance cooling. Using innovative StealthForm technology, this hat is designed to be completely crushed, balled up, or stuffed into a suitcase, only to snap back to its original shape without a single crease. To keep you performing in the heat, the interior features Iso-Chill fabric that remains cool to the touch, while laser-perforated details provide maximum ventilation. Lightweight, seamless, and machine washable, it offers a "barely-there" feel that adapts to your head shape for a custom, secure fit throughout your longest days on the course or the trail.