Compression hosiery for healthier legs. Class 3 ActiLymph compression stockings deliver the correct compression levels alongside fabric stiffness needed to manage moderate to severe chronic swelling, lymphoedema and varicose veins. Latex free. The ActiLymph range is offered by the NHS and medical professionals across the UK. If you have had, or believe you may have had, any problems with your veins then it is important that you seek advice from a trained health professional before wearing any compression hosiery.