Old Navy Tank Sz 3X & 4X Navy Blue Fitted through body, scoop neck, hits below waist, fabulous & soft! Cotton-Jersey, with comfortable stretch 57% Cotton, 38% Polyester, 5% Spandex Fit & Sizing Models are approximately 5'9" and are wearing sizes L (numeric size 12), S (numeric size 4) and XL (numeric size 18).