Many people like running at night, so the reflective gears are necessory, it greatly improves the safety of night running, perfect for walking the dog, jogging, cycling with your boyfriend/girfriend, families or friends in the early morning or at night. It is also a best gift for runners. There are all kinds of reflective running gears, the most common are reflective vest, reflective shirt, reflective jacket, reflective arm band, reflective sash/waist belt, reflective cross belt, reflective tape for clothing and so on. You can choose as your need. Our reflective vests are well-made, lightweight and breathable material, soft and comfortable, buckle closure, the length on shoulder and waist are both adjustable, suitable for both men and women. Specification: Material: polyester and spandex Shoulder straps: 14-21 in adjustable Waist belt: 27-41 in adjustable Width: about 2 in Color: black Package includes: 2 x Reflective vest Note: Manual measurement, please allow minor errors on size. Hand wash, please do not wash them by machine.