I opted for the army gaiters (thanks Neil) and they are perfect, just what I was looking for, built to last and be abused, tough (not sure how weatherproof they are, but they look like they will do the job). Bargain for £6 quid. One problem though, they are a little tight fitting around the calf and at the top. The website didn't offer any sizing options, so I assumes they were "one size fits all (soldiers)" sort of thing. Do they come in different sizes? These are just about OK with just a pair of trousers, but any kind of thermals would render them uncomfottably tight.