Royal Robbins Clouds Rest Hemp Long SLeeve - Men's Dark Olive Heather Medium. Its made primarily with hemp a natural fiber we chose due to its durability and sustainability properties. Blended with organic cotton this super comfortable shirt will get even softer with use. Specifications for Royal Robbins Clouds Rest Hemp Long Sleeve - Men's: Manufacturer: Royal Robbins Sleeve Length: Long Sleeve Age Group: Adults Gender: Male Quantity: 1 Fabric/Material: 56percent hemp 23percent cotton 21percent polyester Sleeve Type: Long Sleeve Weight: 25.5 oz Last Chance: Yes Features of Royal Robbins Clouds Rest Hemp Long Sleeve - Men's Breathable Durable Package Contents: Royal Robbins Clouds Rest Hemp Long Sleeve - Men's Royal Robbins Y12600123-319RR-M: Clouds Rest Hemp Long SLeeve - Men's Dark Olive Heather Medium