FITS MOST SIZE SHOES- Securely hooks onto your shoes with no adhesives or fasteners. Target shoe size heel width between 2~3.5 inch, fits most size shoes. Not suitable for leather running shoes to avoid scratching the surface. RUN IN SAFETY- Ultra bright lights are visible up to a half mile, giving maximum light output and offering around 70-100 hours of illumination. Flashing light can be seen by drivers in peripheral vision. TWO LIGHTING MODES- Clips featuring two modes, color changing RGB flash output and steady color fast strobe. Press once to keep for the first lighting mode, press again to activate the flashing mode. WATER RESISTANT & LIGHT WEIGHT- feel free to use in any terrain of any weather, super light weight for all outdoor activities - running, jogging, cycling, walking, horse riding, etc. LONGER LASTING & LIFETIME WARRANTY- Using the best PVC quality materials which provides greater flexibility.