Thin and flexible so that it contours to your body's movement. Sweat-dry absorbent core helps to wick mositure away, keeping you dry and fresh. Stays in place: ideal for your workout. Breathable backing:allow air to circulate so your skin breathes naturally. Perfect for active freshness during your workout. U by Kotex sports liners are specifically designed for sport active freshness. Whether you're into low, medium or high impact workouts, these breathable sport liners have a sweat-dry core to wick sweat away - perfect to help you feel dry and fresh during your workout.