From Berlin & Daughter XXL is brand new only tried on This soft, lightweight device is subtle and easy to conceal. While most women find it more comfortable to be worn over their clothing, it can absolutely be worn under clothing as well. We find it’s generally most comfortable to wear this device over a thin undershirt. Layer this with a darker-colored shirt on top, and nobody will even know you’re wearing it. A Great Option for Women who Workout This device is an ideal solution to pain induced from intense workouts and/or injuries. In fact, this device is gentle enough to wear even while you’re working out! This is not possible with the other, more restrictive posture correctors on the market.