Women's Act Like a Racerback Yolo Vest Black S/M Women's Act Like a Racerback Double Aztec Heads Skulls Yolo Vest Top 95% polyester 5% elastane Machine Washable Size Guide: SM = US 4-6 = UK 8-10, ML = US 8-10 = UK 12-14 , LXL = US 12-14 = UK 16-18 , XXL = US 16-18 = UK 20-22, XXXL = US 20-22 = UK 24-31