Fancyqube(TM) Women Fashion Backless Bow Knot Shirt Tops This shirt is made of high quality cotton, very soft. It designed backless with bow-knot on the back, sexy and adorable. Sleeve: Long sleeve Collar: Round collar If you run between sizes and are not sure what size to get, we would suggest going up a size. Tag size is Asian size, which runs much smaller than US/CA size. Pls. check the size chart carefully to choose your right size.