Silver fabric (tested by NASA) is here to keep you fresh and cooler. Mack Weldon has engineered a game changing line of silver underwear featuring the fabric softness and comfort of pima cotton, plus the added performance benefits of pure silver in the fabric (yes, real actual silver)—to keep you cool and dry when you’re hot, or at the gym working out.

Silver is like air conditioning for your underwear, it keeps you feeling cooler, and the antimicrobial properties of silver means that this underwear naturally destroys odor-causing bacteria. This high-tech underwear also features a waist band that will never roll, stay-put legs that will never ride up, and mesh cool zones that enhance airflow.

If you don’t love your first pair of underwear, Mack Weldon will send a different size, style or issue a refund—no questions asked, and you can even keep the pair you tried on. Get ridiculously comfortable and stay fresh by grabbing a few pairs today.

_{This content was produced by Mack Weldon and not by The Daily Beast editorial staff.}