Pretty Polly 10 Denier Medium Support Gloss tights are now discontinued.
However, these great products are here to replace them.

These are an essential item if you like to wear knee highs under your trousers and skirts but need a higher level of support.

For tired hard working legs these 30 denier tights have graduated compression which firms and relieves the legs.

These opaque tights have graduated support throughout the leg, with 14mm Hg at the ankle, 11mm Hg at the calf and 7mm Hg at the thigh. A really good choice if you're going to be on your feet for as long time.