Fashionable and Cute Waterproof Safety LED TailLight, Vervel for Walking, Cycling, Hiking, Jogging, Running, Cute FlashLight Running Warning Lights for Runners, Walkers, Bikers &#9829;EASY TO USE: The batteries are very mini and easy to assemble. The stay-put clips are strongly incorporated so the light won't fall off when you enjoy your sport in the low-light conditions especially in darkness. &#9829;PREMIUM WATERPROOF: It is designed with completely waterproof property, so it still works well in the rain. Even if the rain covers your shape, the lighting LED shows your existence and the driver will know it. &#9829;GOOD GIFTS FOR PET MASTERS: More and more family keep pet nowdays and we need to walk pets at dusk when off work. As we always walk our dogs in the darkness, and the dogs are very naughty, the lighting LED keeps us and our dogs away from accident. &#9829;SUITABLE CROWD: If you like camping, cycling, hiking, running and walking a dog, and jogging, the safety LED lights help much and make you noticed in low-light circumstance. When you running or cycling in darkness, the drivers will be reminded of your existence. &#9829;CUTE DESIGN: 2.2*0.71*1.1 Inches. The slim led light weighs 0.71 oz. Clip it on to your belt, halmet, bike, and other places, you barely feel the weight of the LED light when wearing it. Each product is equipped with a screwdriver and it's easy for you to exchange the batteries.