Suntasty Men's Cotton Sleepwear Long Sleeve Pajamas Pants with Tops Lounge Sets Modal Cotton Imported Light and Comfort Close skin and Breathable Material: 48% Modal Cotton + 48% Cotton + 4% Spandex Size S usually fits: Height(5'5''-5'7''),Weight(132-148)lbs; Size M fits: Height(5'7''-5'9''),Weight(148-165)lbs; Size L usually fits: Height(5'9''-5'11''),Weight(165-181)lbs; Size XL fits: Height(5'11''-6'1''),Weight(181-198)lbs;