UNIVERSAL: FITS MOST HEADLAMPS - Including most Black Diamond, Petzl, Princeton Tec, Energizer, Fenix, Pelican, Streamlight, etc. MATERIAL: High-elastic Band (stretchable to double length), 1 inch Width, Specially Crafted, Not easy pilling. With inner 10.5" non-slip silicone strip, it fits on forehead, not easy to fall off during sports. Non-slip silicone strips are user-friendly and prevent sweat from flowing to the eye when sweating on the forehead during exercise DURABLE: High-end made fasteners, which are connected to the webbing via hot press, much stronger than stitching SAFE: The external headband with eye-catching reflective strips at night, which makes it safer during night sports or work. SIZE: Two parts: Top Headband (Length: 11.4") + Circumference headband (Length: 26.5")