Using the New Balance FuelCell Rebel v4 is straightforward. Just lace them up and start your run! Whether you're going for a quick sprint or a long - distance run, these shoes are up for the task. When it comes to care, it's best to avoid machine - washing them. Instead, gently wipe off any dirt or mud with a damp cloth. Let them air - dry naturally, away from direct heat. Also, make sure to tie the laces properly to get the best fit and support. Don't use them for activities other than running, as they're specifically designed for running and may not perform well in other situations. With proper care, these shoes will serve you well for many runs to come.