Swix Grip Wax V40 Blue Extra
A really versatile grip wax covering a large temperature range on the cold side of freezing. If you're using it close to 0°C, it needs relatively new snow and low air humidity (below 45-50%).
New fallen snow: -1°C to -7°C (30°F to 19°F).
Transformed fine grained snow: -3°C to -10°C (27°F to 14°F).