Each guide includes a list of the principal peaks and details of towns and villages useful for supplies, and closest points of access to the routes. Important national footpaths such as the Pennine Way are mentioned. He includes advice on essential equipment such as clothing including anorak or cagoule, compass, aneroid barometer, map, rucksack and climbing boots (the most important item), and when necessary, ice axe. Tweed is preferable to corduroy or cotton, and he personally prefers plus fours. Woollen clothing, especially pullovers or sweaters are also useful, and external clothing should be coloured red for visibility. He mentions hobnailed boots in one volume (The Lakes), but they are no longer available, having been displaced by the lighter vibrams with serrated rubber soles. To conserve heat, he recommends either a Bob-cap or balaclava, while a string vest is advisable to prevent heat loss in the cold. Essential foods included sweets for energy and water to prevent dehydration.