Heather Grey nice soft unisex t-shirt
S, M, 2XL: Anvil by Gilden, Preshrunk, 35% Ring Spun Cotton, 65% Polyester
XS, L, XL: Alstyle Premium, 50% Soft Spun Cotton, 50% Polyester

See photos for exact measurements.

Model 1 - 6’, 165 lbs - size medium
Model 2 - 5’9”, 140 lbs - size small