I use 100% cotton.
Designs are offered in 15 DIFFERENT COLORS to choose from in sizes:
Mens - S, M, L, XL, 2XL, 3XL, 4XL, 5XL, 6XL
FOR THE BEST FIT:
1) Lay a t-shirt on a flat surface.
2) Measure the chest area, just under the armpit from side to side find the shirt's width.
3) Then measure the length from top of the shoulder to the bottom of the shirt to find the shirt's length.
4) After taking your measurements, match them to the closest sizes in the chart.