My dd has asked for some "thick blue tights" as part of her Christmas wishlist. We saw some in M&S one day and I laughed and said she'd have to see what Santa brought but maybe I should've bought them there & then as now they don't seem to have them! They were more of a teal/petrol blue? Not boring navy. I've looked on the M&S website and all they have is a ribbed pair, which she certainly doesn't want. I'm guessing she means woolly rather than a thick opaque. I don't really want to spend too much but will have to buy online. If I can't get any, it's not the end of the world but of course I am kicking myself now for not getting them 