<p>As part of its work to establish a national provision of lymphoedema services in the UK, the Lymphoedema Framework project has developed guidelines for the use of compression hosiery in lower limb lymphoedema. The guidelines, to be presented in two parts, have drawn together existing hosiery classifications and linked a new classification with clinical descriptions of lymphoedema. This, the first paper, provides clear guidance on practical aspects such as assessment of arterial status and measurement for hosiery. The second paper, to be published in a subsequent issue of JOL, will explore recommendations for compression hosiery in lower limb lymphoedema and describe strategies for addressing problems that may be encountered.</p>