Every year when hot summer days give way to brisk autumn mornings, we're presented with a choice: warmers or knickers. Warmers offer more flexibility but, when you're committed to riding in the chill, kit like Louis Garneau's Optimum Knickers do away with the hassle of baby-sitting drooping knee warmers throughout your ride. The Optimum blends LG's Signature Mat and Quantum fabrics for a construction that targets stretch and comfort. The lack of a fleecy internal face means that these materials are ideal for temperatures ranging from the mid 50s to the mid 60s, though personal preference could push that range by a few degrees Fahrenheit in either direction.