KINGDESON Men's Vintage Cotton Low-Waisted Sport Workout Bottoms Lounge/Sleep Shorts 90% cotton comfortable and breathable,with 90% cotton + 10% spandex Breathable, flexible,comfy with pockets on sides and back. Hand wash softly in the cold water is highly recommended. Size S: Waist 25-28 inches;Size M: Waist 28-31 inches;Size L: Waist 31-34 inches Elastic waist, it can also be an active shorts.