The VENOSAN 7000 has been designed as one of the most advanced stockings in the world available to treat Chronic Oedema due to its compression & stiffness qualities, combined with the benefits of the fibres including Sea Cell active technology. RAL Compression Class 2, 23-35mm Hg Short Stretch = High Stiffness = Major Effect Stiffness Index refers to the resistance or stretch of hosiery when a limb tries to expand within it. A stiff garment expands minimally & so combats the oedema. Stiffness is a key component of the VENOSAN 7000 ability to manage oedema providing the following oedema management advantages: Higher class compression to the demanding RAL standard class 2 (23-32 mm Hg) & class 3 (34-46 mm Hg) to meet a range of Oedema & Lymphoedema conditions. Designed with a high stiffness index i.e. low pliability of the stocking (similar to that of a short stretch bandage) which is associated with a more pronounced reduction in venous reflux & a pronounced massage effect resulting in an enhanced reduction in swelling. Thicker fabric composition reduces risk of gathering in small folds. Always remember to buy two pairs, one to wear one to wash Always consult a Medical Professional before wearing Compression Support hosiery.