They were slip in jelly shoes, I think from Marks and Spencer’s, and they had lace on the inside and clear plastic on the outside - I think you could get them in white lace, and in pink and blue ombré (before ombré was even a thing…). A girl in my class had them and I wanted them for the ever, and I have a massive wave of nostalgia and NEED to see a picture but I can’t put the right words into google. Anyone else remember them?