This is the classic Emerald Triangle design from Humboldt Clothing Company on a Tie Dye Tshirt, this is a crystal dyed tshirt.  This design features the 3 counties Humboldt, Mendocino, and Trinity which are collectively known as the Emerald Triangle. The Humboldt Treelogo is screenprinted on the back right shoulder.  This is a high quality mens crystal dyed Tie Dye Tshirt made of 100% cotton.