Freedom Lace is a nice, lightweight winter option from Bogs. The uppers are made of waterproof leather, and combined with a seam-sealed construction promises to keep you dry. A warm lining promises a temperature rating of -30°C (although take that with a grain of salt, as temperature ratings are dependent on several factors, including socks, circulation, activity level, etc.). Six eyelets plus a speed hook at the top help get a snug fit, and an inside zipper reduces the work to get them on and off. All of this weighs less than a kilogram for the pair.
Available at Glebe Trotters.
*(The grey colour has a slight green tint that is not overly obvious in the pictures)*
Sizing recommendation: We find these fit a bit on the big side, so if you generally find yourself as a half-size, we recommend the half-size down.