Spending more than £400?Ask for a quote.
Kahtoola - Micro Spikes
(Get this price if shipping outside EU)
Fantastic addition to a winter pack where patches of ice might be encountered and an extra bite is needed, but the bulk of a full boot and crampon combination are unnecessary or desirable.
Having used a pair extensively in Iceland on hard ice, with a pair of Goretex trainers, I was genuinely impressed and even found them stable and comfortable to run in. In snowier conditions they do have a tendency to ball up which is worth keeping an eye on, but I have used them through snowy, wintery days on the shallow hills of the Brecon Beacons and they served me well.