The brakes on my bike gripped up shortly into our 6.5 mile tour on July 17, 2009. Our guide did his best, but without tools was unable to get the brakes to release. Imaging riding with the brakes continuously on! Everyone else had to wait for me over and over. I wore out, and my friend traded bikes with me. She wore out, too, and wound up walking back to the store while our guide walked my broken bike. They company would not refund my money although they didn't deny their equipment was defective. Save your money and go with one of the other bike tour companies on Central Park -- there are lots.