What the heck is a "tregging?" Why, Trousers + Leggings, of course! These leggings have a nice weight and stretch to them, similar to a trouser- but with the elastic waistband and cut of a legging. They are 100% opaque and are best worn as pants. 72% Rayon, 24% Nylon, 4% Spandex. Made in the USA. These are juniors plus sized, so 1X = 12/14, 2X = 16/18, 3X = 20/22. Hand wash cold, hang dry.