93.1% Cotton 6.9% Spandex 1: Semi-open collar threaded long-sleeved T-shirt with 2 buttons at the collar. The height is just right, just enough to expose the collarbone, expose the neck and collarbone, and make the neck slimmer and longer. 2: 270g 4*2 needle thread, good rebound, soft and comfortable feel, looks slim when worn and can hide flesh. 3: For matching, it can be worn with high-waisted jeans, skirts, overalls, and overalls skirts.