Blue:
Temp Range: -3°...-12°C
Snow Type: Universal
Gel topcoat for non-fluoro waxing, hardest of the gel topcoats from Start and can work in all snow types below 20F

Purple:
Temp Range: 5°...-5°C
Snow Type: Old/Transformed
Gel topcoat for non-fluoro waxing, hard more durable feeling for slightly more transformed/glazed track snow at or below 32F