3.4 oz.; 55% cotton; 45% polyesterFine yarn count shirting; true non-iron performance straight from the dryerClassic fit for professional appearancePatented pucker-free taped seams; fused collar cuffs and placketSplit back seam with bias cut back yoke; rolled button-down collarAdjustable comfort collar for up to an inch of stretch at neckLeft-chest pocket; pearlized buttonsAvailable Sizes: S; M; L; XL; 2XL; 3XL; 4XL