Bike is originally designed for off road use but I have made is usable for hard pack trail and street use. Frame size is medium, and is made of light material (chrome-moly). Shifters is direct drive Shimano type. Wheels and seat post are quick release. Stem is adjustable. Tires are in very good condition and designed for rail trails and street use. Bike is of very good quality and in good condition. It has been very well cared for and never in bad weather. The Specialized brand name is a quality product in the bike world so considering the quality and condition of this bike the price is more than fair.