Our Colorado Mountain Sun Tee in mustard is a screen printed t-shirt with dark green water-based ink. With a retail fit, this incredibly soft t-shirt is a heather blend made out of 52% Airlume combed and ring-spun cotton & 48% polyester. Our soft t-shirts are unisex in wear. How it's made: We have a USA-strong approach to production. Almost the entire manufacturing process takes place right here in America. The t-shirt blanks are designing here, dyed here and cut here. The garments are then assembled in the U.S. or Central America. All production is 100% sweatshop-free and Platinum W.R.A.P. Certified. This t-shirt are then screen printed with care in our workshop in Denver, Colorado using eco friendly manufacturing processes to minimize our ecological footprint. Washing instructions: For an optimal wash, machine wash with cold water. Tumble dry low or air dry.