Mashed Clothing Dad Cubed (Dad To 3 Kids) Adult Long Sleeve T-Shirt Premium heavyweight 6.1 ounce 100% cotton. Long sleeves. 6.1 oz., pre-shrunk 100% cotton (Dark Heather is 50/50 cotton/polyester) Please see the images for the official Mashed Clothing size charts. The ones provided by Amazon are not accurate.