You've now found the staple t-shirt of your wardrobe. It's made of a thicker, heavier cotton, but it's still soft and comfy. And the double stitching on the neckline and sleeves add more durability to what is sure to be a favorite! • 100% ring-spun cotton• Sport grey is 90% ring-spun cotton, 10% polyester• Dark heather is 65% polyester, 35% cotton• 4.5 oz/y² (153 g/m²)• Pre-shrunk• Shoulder-to-shoulder taping• Quarter-turned to avoid crease down the center