T-shirts are 100% Fine Jersey cotton.
US SIZES (inches):
S: chest width 31, waist width 25
M: chest width 33, waist width 28
L: chest width 37, waist width 31
METRIC (cm):
S: chest width 78, waist width 65
M: chest width 83, waist width 70
L: chest width 95, waist width 78
Undies are 95% Fine Jersey cotton & 5% Elastane Spandex Jersey
S: size 0-2, waist 25
M: size 4-6, waist 28
L:size 8-10, waist 31
METRIC (cm):
S: size 8-10, waist 65
M: size 10-12, waist 70
L:size 12-14, waist 79