SOL'S PIONEER WOMEN, WOMEN'S ROUND-NECK FITTED JERSEY T-SHIRT, 100% organically grown cotton, Natural finish for a softer and smoother feel JERSEY 175, 100% cotton ribbed collar, Round neck, Neck tape, Fitted cut, Tubular, (1) Ash : 98 % Organic cotton / 2 % viscose, (2) Grey melange : 85 % Organic cotton / 15 % viscose.About sizes matching, please refer to the size chart in the product documentation section.