Our minimalist, run-comfortable, easy-to-fit, and super-reflective... reflective vest literally has Visibility designed into it, as the front straps provide a bright V-shaped reflection when cars’ headlights hit them. BE SAFE-BE SEEN - Provides 360-degrees of reflectivity for visibility & safety in low-light conditions HUGS YOUR BODY - Body-hugging elastic design offers full range of motion without interrupting arm swing ONE SIZE FITS ALL (OSFM) - Easily-adjustable shoulder straps and waist belt for a customized fit for all body types EN 1150 compliant