K21S is a great universal klister that works on both sides of freezing when conditions are changing from coarse and wet to fine-grained moist snow. It leans more towards finer snow than K22 and can be mixed with KX40 to increase the kick. Using a base Klister like Swix KX20 Green or Vauhti KS Base will help to lock this wax in place.
Temp Range: -5°C + 3°C
Snow Type: Old/Transformed