Unfortunately, due to challenges with supply and increased demand for this type of wax this winter, we do not have any cross country ski kick wax available to purchase online at this time. To clarify, you are asking about a wax like the Swix VR55 Silver/Violet Kick Wax? It comes in multiple colors/temperatures depending on conditions. If you're needing some soon, you may want to stop by your local REI Ski shop and ask one of their ski techs if they have any wax available, they may have some in stock or know of another local shop that does.
Hopefully this helps, thanks!
At REI, we believe time outside is fundamental to a life well lived.