The official Beard Laws beard measurement shirt so you can not only track your progress but

 SMLXL2XL3XL4XL5XL
Width, in17.9920.0021.9723.9825.9827.9930.0431.97
Length, in28.0029.0030.0031.0032.0033.0034.0035.00
Sleeve length, in7.247.768.238.749.259.7610.2410.75

can see where you ranked. 

The unisex heavy cotton tee is the basic staple of any wardrobe. It is the foundation upon which casual fashion grows. All it needs is a personalized design to elevate things to profitability. The specialty spun fibers provide a smooth surface for premium printing vividity and sharpness. No side seams mean there are no itchy interruptions under the arms. The shoulders have tape for improved durability.

.: 100% cotton (fiber content may vary for different colors)
.: Medium fabric (5.3 oz/yd² (180 g/m²))
.: Classic fit
.: Tear-away label
.: Runs true to size

WeightN/A