These are supremely warm, with most of the front panels made from Gore’s Windstopper softshell. While not fully waterproof, they’re very repellent, and the bottom few inches of the shin have a waterproof panel.
The bib is high fronted with a short hidden zip to help with comfort breaks, while the full back becomes mesh then leads into broad mesh braces. The seams are well placed to avoid chafing and include plenty of reflective piping. The Xenon pad is a favourite too.