(All China Buy) sellers kshop link does not allow for size and color way of the shoe style (yolo)

Trying to buy some cheap shoes from yolo and when I out the kashop link into all China buy it pulls up the shoes, but there are no options to pick sizing or color way?

Does the seller have to create an individual link maybe? Just seems weird it’d have a direct link but not where to specify but I am still fairly new