Numb is a music bar between Itaewon and Hangangjin where guests drink beer, wine, and single malt while requesting songs. It uses vacuum tube amplifiers and speakers, and cocktails are served with the shot and ingredients separately. The second floor holds the bar and three tables, and the third floor holds two tables. The women's restroom is on the second floor and the men's restroom is on the third floor, and the space is small.