The Urban Platform could be considered an upgraded version of the GR series pedal. When compared to the GR series of pedals we refined the shape, reinforced the oversized flip tab, and upgraded the bearings to our Triple Sealed Bearing system (that spins for days). The Urban Platform features ridges to provide grip on the exterior edges of the pedal body and along the axle line . There is a slightly taller set of inboard ridges to help keep your feet where they belong and prevent your shoes from rubbing on the crank. We recommend toe clips with all of our Platform pedals, and specifically recommend the MKS stainless steel Cage Clip quarter, half or full as a great pair. This pedal looks excellent on most steel and vintage bikes.