ReliBeauty Women&rsquo;s Flutter Sleeve Solid Tops 95% viscose and 5% spandex Hand wash, wash with like colors Jewel neck Flutter sleeve(the sleeve opening is sewed high to the armpit so people will not see your bra when you lift your arms) Drawstrings on both sides Regular fit, with elasticity, fits US sizes 0-20W. About the detail of size info, please follow the Product Description.