Ancrina Plus Size Women's Thigh High Socks for Thick Thighs

There are two different size options for these, and it's not clear from the listing what the difference is between them. The drop down menu offers these in "One size", and "One size Plus". I ordered two different colours, one in each size option. For anyone who's wondering, the socks are exactly the same size, but the "plus" option has larger feet.I'm a UK size 10, and have quite toned legs, so most over the knee socks are too small for me, but these fit well. A little roomy, but very comfy, and they stay up without the tape they came with.