6.5 oz., preshrunk 100% combed ringspun cotton piqué; 30 singles; soft fashion contoured collar and welt cuffs; clean finished Allen Solley placket with ¼” reinforced box; double-needle bottom hem; three high-gloss woodtone buttons; Oeko-Tex® Standard 100 Certified; Heather Grey is 90% combed ringspun cotton piqué, 10% polyester;