Waffle texture on a cycling garment causes turbulence in the thin layer of air closest to the dimples. This layer of turbulent air is able to follow the contours of the garment much longer creating a smaller wake and and lower drag. (This is also known as the golf ball effect because it's why golf balls have dimples).

An invisible zip allows the print to meet perfectly at the centre to ensure the spacing and lettering of logos across the chest is preserved.