Patagonia Tin Shed Cap. Patagonias tough yet ultra-comfortable Tin Shed Cap has a hemp fabric blend for the panels for cooling airflow. Hemp is one of the world’s most durable natural fibres and was used in making the original work cloth. The Tin Shed also features a brim made of Bureo’s fully traceable NetPlus™ material which comes from 100 % recycled fishing nets. Fair Trade Certified™ sewn.