Your height: 5'10" to 6'3" (178 to 191cm) approximatly (?).
Frame size = 23in/58.5cm
Comments:
Tall bike, good quality, new rear tire, good for city streets.
Mountain Bikes: they are sturdy and designed to go everywhere including off-road. Good for rough riding. In general heavy and with deep thread tires slow on paved roads. Not good city bikes unless narrower and slick tires are installed.
15 speed: perfect to go everywhere including going up very steep hills. There are 3 front chain rings and 5 rear gears. - Derailleur: Shimano RS
Tires 26 x 1.75: medium width tires with small thread, for comfort on asphalt and occasional off-road.