new with tags! Princess Polly Romper/Playsuit, Size XL Low Bib short-alls with spaghetti straps Cotton poly blend, Hand washable Off-white with colored stripes Pockets! Line on the back bib, see photo. Looks like it may be an odd colored thread rather than a mark. Measurements - flat (All measurements in inches) Waist - 21 Inseam - 3.5 R&OS