Whilst the urban myth that most of our body heat is lost through our head was debunked by scientists in the winter of 2008 (don’t let your kids see this), a warm hat remains an essential item of equipment for hillwalkers in Scotland all year round. Even in the height of summer the Cairngorm plateau can be a pretty inhospitable place; when the wind picks up and from October to April I’ll generally carry a spare hat in case of loss; a balaclava is a good option for the coldest weather. As with all items of outdoor equipment there are…