Mens Funny shirts are pre-shrunk heavyweight 5.6 ounce 100% cotton. Double-needle neck, sleeve and bottom. Shoulder-to-shoulder tape and seamless collarette. Women's are a Ultra Cotton T-Shirt. 6.1 oz 100% cotton tee. It features seamless double-needle collar, narrower neck rib, taped neck and shoulders. Sizes tend to run small. American Apparel brand is also available as an option. We strive for quality and uniformity but minor shade variations from monitor displays may occure in shirts.