SOL'S PLANET Long Sleeve Polo Shirt Unisex 100% organic cotton Ribbed collar with neck tape, Reinforced placket with 2 tone-on-tone buttons, Long sleeves with 1x1 ribbed cuffs, Cut and sewn, Spare button sewn on inner side seam (1) Grey melange : 85 % Organic cotton / 15 % viscose, (2) Charcoal melange : 60 % Organic cotton / 40 % recycled polyester. About sizes matching, please refer to the size chart in the product documentation section.