For all its virtues (sun combatant, outfit enhancer, frizz controller) the summer straw hat makes an impossibly inconvenient—and easily crushed—travel accessory. Christys’ Nimbin fedora ($48 at Catbird, 219 Bedford Ave., nr. N. 5th St., Williamsburg; 718-599-3457) eliminates that packing predicament completely by marrying stylishness with smashability. Made of pliable raffia and sporting a modest 1.5-inch brim, the hat can be repeatedly mashed, sat upon, or haphazardly folded, and it miraculously springs right back into shape.