The NU25 UL is the lightest headlamp, at only 1.59 ounces, optimized for the most dedicated outdoor enthusiast that takes carrying weight very seriously. The dual-band design evenly distributes the weight with a very simple cinching mechanism to control the tightness for user comfort. The multithreaded cord has highly reflective bands for enhanced visibility, as well as glow-in-the-dark bands for visibility without ambient light.