ONNO Men's Long Sleeve Bamboo T-Shirt FREE SHIPPING from ONNO T-Shirt Company, Boulder Colorado. ONNO makes t-shirts from bamboo, hemp, pima and organic cotton. ONNO t-shirts are made overseas in small, family-owned production environments. The fellow in the picture, whose name is Ben, is 6 feet tall and wearing a size medium. 70% viscose from organic bamboo, 30% organic cotton. We've worked hard to make what we think is a good t-shirt - we hope you'll like it.