SureSmile aligners are removable so you can play sports without worrying about causing damage to your aligners. However, keep in mind that SureSmile aligners must be kept in for a minimum of 22 hours a day, so plan your time carefully. You'll also want to invest in a sports mouth guard to protect your teeth, as orthodontic treatment can cause your teeth to loosen slightly as they shift into their new positions, and this can make them more susceptible to damage.