Calvin Klein Cotton Stretch 2-Pack Boxer Brief 100% Cotton Machine wash warm, do not bleach. Tumble dry low, warm iron if needed. Do not dry clean. Wash dark colors separately. 95% Cotton / 5% Lycra Machine wash warm, do not bleach. Tumble dry low, warm iron if needed. Do not dry clean. Wash dark colors separately. Small Waist: 28-30", Medium Waist: 32-34", Large Waist: 36-38", Extra Large Waist: 40-42"