Don't let anything stop you from reaching your goals—especially not your period. These lightweight, stretchy Nike Pro shorts dry quickly and are equipped with an ultrathin liner that helps prevent leaks when worn as a backup to your usual protection. So whether you're pushing through a challenging set or counting down the clock, you can take it on without worry. Product Details - Body: 78% polyester/22% spandex. Waistband: 63% nylon/21% polyester/16% spandex. Panels lining: 62% polyester/38% spandex. Gusset lining: 66% polyester/34% spandex. - Machine wash - Imported - We conducted testing on the materials in Nike Leak Protection: Period liner ahead of their market introduction and the results indicated no detectable PFAS chemicals. Further, PFAS chemicals were not intentionally added to the materials in the product. - Shown: Black/White - Style: FV7043-010 SIZE & FIT Tight fit: snug and form-fitting Medium support: feels ke a snug hold to keep everything in place Mid-Rise: sits just below your natural waist (smallest part of your torso)