"This is my third Tech Lite T-Shirt. I can wear this shirt hiking for 4 days in a row and can barely detect an odour. Best shirt for hiking the West Coast and North Coast Trail as it keeps you warm against the ocean breeze and dries fast from the sweat from the hike and heavy pack on your back. The shirts fits great, true to size and looks stylish as well - I never go hiking without it!" ~ From customer reviews at icebreaker.com