This is a thin, tee shirt like material!
 
Product Description
The easy choice for laid-back, lightweight and layerable style.
4.4-ounce, 60/40 combed ring spun cotton/poly, 30 singles
Dyed-to-match drawcords and zipper
Shoulder to shoulder twill taping
1x1 rib knit cuffs and hem
Tear-away label