I'm With Stupid Shirt

What, are you an idiot? Fabric blends from the manufacturer: Default - 100% Cotton. Ash and Heather Prism colors - 99% cotton, 1% polyester; Heather and Solid Blend colors - 52% cotton, 48% polyester; Athletic Heather and Black Heather - 90% cotton, 10% polyester.  Sizing Guide:   S M L XL 2XL 3XL Width, in 18.00 20.00 22.00 24.00 26.00 28.00 Length, in 28.00 29.00 30.00 31.00 32.00 33.00 Sleeve length, in 8.90 9.20 9.50 9.70 10.00 10.40 Size tolerance, in 1.50 1.50 1.50 1.50 1.50 1.50