Stay powered up during your long-distance runs with our solar panel battery, designed to velcro securely onto the top of your hydration pack. Perfect for trail runners and marathoners, this compact solar panel captures sunlight to keep your phone and GPS devices charged while you're on the move. Lightweight and durable, it won’t slow you down and easily attaches with velcro, giving you the freedom to stay connected and track your performance without worrying about your battery life, no matter how long the run.