95% rayon 5% spandex. Very stretchy! This is a well made dress, NOT the same as the "made in China" look alike on certain sites. All measurements taken laying flat and are approximate. Length is from top of strap to bottom hem. Due to the stretch, the measurements may seem small, but the dresses are true to size! 1XL- Waist- 14", Pit to Pit- 19", Length- 59" 2XL- Waist- 15", Pit to Pit- 20", Length- 60" 3XL- Waist- 16 1/2", Pit to Pit- 21", Length 61" Made in USA. Price is FIRM. No trades