Rugged and versatile just like you, the Elia Helmet is specifically designed for women. Petzl????????s state-of-the-art OMEGA headband system includes a new webbing adjustment mechanism and allows for easy on and off. . . . ABS shell and expanded polystyrene liner. . New OMEGA headband system has new webbing adjustment mechanism and offers easy on/off. . Absorbent comfort foam. . Durable and versatile. . Lightweight. .