How do I know which color VKs I am going to get – what’s the difference?

The different colors correspond to the shoe type & shoe fit. Yellow is our thickest most comfortable top (7mm) and if you play a sport with a non-cleated shoe, you will receive this top. Black is slightly thinner (5mm) and designed for cleated shoes. Red is our thinnest top (3mm) used for tight fitting shoes (soccer and track).