LW Reflective Safety Vest for Running Cycling Walking Yellow Lightweight LW Reflective Safety Vest for Running Runners Biking Cyclists Walking Hiking Exercising Yellow, 100% polyester mesh, Ultra Lightweight, Only 1.5 Oz, Highly Reflective Strips Height 15.5"; Waist Width 19" (adjustable from 18.0" - 20.5", with circumfence from 36" - 41"), Velcro Adjustable Specially designed shape (above waist, tight fit) for full range of motions