all i could tell you is what it says on the bike. Schwinn Sidewinder, guess it is a mountain bike, with rough tires and shocks on the front. Not much of bike, i think, but i did not think i would really ride it much. but heck, i am liking it! the chain falls off sometimes when i shift down to the smallest whatever you call it, and that caused me to tip over going up a hill. lol. thankfully, i ride in the country, so no one got to see that!. thanks for the reply.