Arbor Men's Session T-shirt 70% Viscose derived from Bamboo/30% Organic Cotton Made in US Machine Wash 70% Viscose derived from Bamboo/ 30% organic cotton T-shirt custom made in Los Angeles, CA Extremely soft hand, regular fit Artist Series - Art by Jessica Cooper Printed neck label Check out the many benefits of using Viscose derived from Bamboo http://www.arborcollective.com/2009/07