The product on the mannequin is size L/42/14.
It is recommended that you buy it 1 size smaller than your own if you don't like it too loose fitting..The Model's Measurements: Height: 189cm(6'2'') Bust: 91cm(35in) Waist: 78cm(30in) Hips: 95cm(37in) Oversized fit: It has an extra loose, wide fit. Trendyol Men's Black Oversize Fit Linen Textured Shirt 49% Polyester, 28% Cotton, 15% Viscose, 5% Acrylic, 3% Polyamide; Colors may vary during concept shooting due to the difference in light.