Whether we are traveling or just lounging around at the house, the ExOfficio Give-N-Go 2. 0 Bikini Brief is one of our go-to's when we need comfortable, high-performing underwear. The Give-N-Go 2. 0 Bikini Brief features a four-way stretch, breathable mesh fabric for total comfort and airflow. An anti-odor treatment keeps the underwear smelling fresh for longer, and the flatlock seams reduce irritation and chafing.