Four days of Bumps racing in Spring and Summer between the colleges at Oxford and Cambridge is almost unique in the world of rowing and is an iconic experience. There is a festival atmosphere by the river during what is the most prominent collective inter-collegiate sports competition. Alumni, families and friends gather to cheer and watch multiple men's and women's crews from each college competing; with the ultimate accolade of "blades" for bumping the boat ahead on all four days or going Head of the River. The award of blades entitles crew members to commission an oar painted with the crew's names and bumping scalps, the walls of Oriel’s quads are also chalked to mark the victory.