I went in here once a couple years ago because my boyfriend's nephew needed a new bike helmet. The sales guy was real patient with the boy; showing him different styles that were available, what "all the kids were buying," etc. He also didn't mind that my BF was touching everything... he even let my BF test one of the low riding bikes--the kind that looks like a flattened tricycle (the wheels were lifted off the ground or something).
He ended up giving us a discount on the helmet because between us adults we didn't have enough money for the helmet AND ice cream. (We were biking to the ice cream shop.) We also picked up a bicycle bell for the nephew that day.
I'm not sure, but I think this is the same shop that also rents out bikes for the day so you can ride around the Island. The kind that sits two across (up to four) and has a basket up front and a canopy overhead. They also have "regular" bikes.