CW latest winter clothing test brings us the Castelli Diluvio 16 overshoe £35
The 3mm neoprene may not be the most robust of fabrics - its showing signs of wear around the cleat hole after the first few rides- but it does a very good job of insulating the feet thanks to its great fit and extra tall cuff.
In truth, it's one of the snuggest overshoes we've ever used, and despite not being waterproof, little moisture gets in.
No doubt the change from simple Velcro to full waterproof zip at the back helps. .
The zip cowl also helps prevent any annoying digging in or accidental opening in use. Minimise your time off the bike and these will serve you wel.