Boob Organic Cotton Round Neck Long Sleeve Nursing Top 92% Organic Cotton, 8% Elastane Rounded neck with long sleeves Soft knitted stretch fabric Dual layer for breastfeeding access 92% organic cotton and 8% elastane (spandex)Machine washable cold/Lay flat to dry US Sizing:(Order Pre-pregnancy Size) XS=0-2 S=4-6 M=8-10 L=12-14 XL=16-18 XXL=20