Material: Nylon Color: Black Compatible: 18650 flashlight or 26650 flashlight (slightly tighter) Package weight: about 55 grams Package contents: 1 torch headband only. Scope of application: Suitable for flashlights with a fixed outer diameter between 21 mm and 35 mm. Applicable method: The flashlight is fixed on both sides or on the top of the head, and the direction of the flashlight head is forward. Features: Moderate thickness, comfortable to wear, no pressure High-quality nylon material: Made of high-quality nylon, Durable, comfortable, and lightweight. Adjustable shoulder strap design: Adjustable shoulder strap design, you can adjust the size according to your preferences, comfortable to wear Super clear vision: Connect up to 3 18650 flashlights for super clear vision at night. EASY ASSEMBLY: Easy to assemble and hold firmly and stably