Patagonia Capilene Bottom is a slim-fit base layer designed for men. Made of 100% polyester, it is perfect for travel, activewear, casual, and workwear occasions. The black long johns are ideal for winter, fall, and spring seasons. The underpants feature a skinny leg style and are manufactured in the United States. The Capilene Bottom is a great addition to any wardrobe, especially for those who love the USA theme.