Roberto Collina Long Sleeve Polo ShirtThe best of the best Made from certified sea island cotton. This garment is outstanding in quality and style. Classic fine knitted Sea Island cotton yarn was used to produce this polo shirt. The real west Indian Sea Island Cotton, named in Latin Gossypium Barbadense grows only in the best climatic conditions and it is cultivated only in the British West Indies. This rare and expensive raw material is made of the longest cotton fibres available.