Abstract: A portable accident marking system to be used in conjunction with a rigid structure such as a snowboard, skis or the like, in order to alert others of an accident. The system is pliable so that when not in use it can easily fold and fit into a small pocket. The system includes a main body, cords or elastic bands, and two opposing end caps wherein the cords attach the end caps to the main body. Each end cap includes a pocket which captures the tip or tail of a snowboard. Retainer clips are then used with each cord to adjust the fit of the system. Bright colours, reflective material, and indicia are used to make the system highly visible.