Selling my beloved bicycle because we're moving. This baby has been great for living in the bay area. The frame is aluminum/alloy but relatively light. I added the small handlebar brakes for easier access and increased comfort for those of us with smaller hands. It also has 2 water bottle holders and the tires are phenomenal. Here are the specs: http://bikereviews.com/road-bikes/jamis/2010-jamis/jamis-ventura-comp-femme-womens-road-bike/