No hang tag but size 2 (in my opinion this dress runs a little large due to the fabric). 92% cupro, 8% elastane. Cupro is breathable and drapey with a soft, peach fuzz feel. Roomy armholes. Relaxed fit. Double fabric halfway through. Great preowned condition, one tiny stain that I have not tried to treat (pictured) that is virtually invisible unless you search for it. Approx lay flat measurements: 14” pit to pit 45” length