Colour, movement, racing, marvellous scenery, calculus – it’s all part of the Grandest of Grand Tours Calculus? The mountains in Daniel Davidson’s design are defined by the grid of graph paper. As we know thanks to Newton, the area under the graph is always proportional to something. In this case perhaps the leg shredding effort of not just riding over them but of racing over them. Show your appreciation for refined athleticism wear our Daniel Davidson Leave a Trail of Colour t shirt.