Ah, I recognise them as duo boots! If i'm right, for everyone else's information, they specialise in wide calf sizes, so will fit all ranges of legs! They're quite pricey, but can be bought here...
Specialists in knee length calf fitting leather boots for women | DUO boots
My partner bought me a similar pair from the site two years ago, and I was sooo chuffed to finally have a pair of knee-highs which actually fit my fat calves! Of course, i've lost all my weight since then, so they're now too big. Those boots were the only thing I regretted about getting slim!!
Unfortunately, my legs still aren't
that slim, so I now still have to shop in Evans for boots. Considering I couldn't even zip Evans boots up before though, I think myself quite fortunate!
Jo x