Frozen feet are one of the most common ailments of winter cycling, and eventually even windproof booties and wool socks will be overwhelmed by the cold if the space between your core and your feet isn't adequately protected. The Giordana Men's Fusion Bib Tights shore up your body-warmth supply lines with full-length thermal protection that piecemeal solutions like shorts and saggy warmers can only approximate. There are a few key changes to call out for the new Fusion Bib Tights, most notably the lie-flat bib straps and Giordana's use of a new fabric, Mititech ThermoRoubaix. The fabric's lightly brushed inner face presses a fleecy loft against your skin, creating a layer of soft warmth as your muscles warm up. The tights aren't sheathed in windproof panels, so we believe they're equal to temperatures into the mid-30s, depending on your cold tolerance. For more extreme conditions, we recommend layering them beneath shell pants. Inside, the Fusion Bib Tights feature the same Cirro chamois you'll find in Giordana's summer racing kit, so you won't have to experience the awkward break-in time while your body acclimates to a new chamois. This represents a considerable upgrade to the old Fusion tights, which use Giordana's mid-tier option, instead.