Credalast Flatbed Cotton Anklet the perfect solution for someone in need of an ankle support with medium level compression strength, UK Compression Class 2 18-24 mm Hg. Key Properties Comfortable Medium level graduated compression Easy to put on Cotton Content for those with allergies Always remember to buy two, one to wear one to wash.NHSYes these stockings are available on prescription through the NHS, however with increasing prescription costs & to save time, why not just buy them here?WARNING! Always consult a Medical Professional before wearing Compression Support hosiery.