What Our Gearhead(R) Experts Are Saying:"I threw these on for a ride I almost skipped because of how cold it was outside, and my feet never once went numb. The fleece lining made a noticeable difference over anything I'd worn before. These are the shoecovers I grab when everyone else is heading for the trainer instead."Cold feet end a ride faster than almost anything else, that dull ache that creeps in around mile ten and never really goes away. The Castelli Estremo 2 Shoecover was built to stop that before it starts. A fleece-backed outer layer blocks wind and water, while a full fleece inner layer wraps the foot in warmth from the first pedal stroke to the last. The YKK AquaGuard zipper keeps moisture out without a fight to get these on, and reflective details add a layer of visibility for the early, dim mornings when this cover tends to get the most use. This is the piece that turns a ride you almost talked yourself out of into one worth doing.