Amphipod Xinglet Strobe Plus Runner's Vest Pink::Ultra-comfortable, lightweight visibility with integrated front and back flash LEDs. Great minimalist design for all weather visibility. Soft, chafe-free construction for superior ease-of-movement. In low light conditions, in-city running, biking, walking with a Xinglet keeps you visible for better peace of mind. Front and back ultra-bright flashing strobe LEDs Adjustable for both height and waist size. Perfect for reflective-shy runners or walkers.