Men's Trek SU100 bicycle (Ellis Hollow)

18" frame. Other than one flat tire and the whole bike needing a good tune up, it is in working condition.
The seat is in pretty rough shape but still usable until you find a replacement. According to the internet "The Trek SU100 is an older, cross-country or sport urban bicycle with a rigid aluminum frame, typically featuring 26-inch wheels and mid-range components, including Shimano 24-speed gearing and Tektro rim brakes."