These are really nice socks. They are well made and feel far more durable than the rather skimpy ones offered by Nike and the like. It also helps that they they are specifically the correct size for my rather small feet. 'One size fits all' type socks tend to be too big.
I've given them 5 stars, because that's what they are worth to me, but I should mention a couple of points for other people to consider.
The colour choice is very specific. You either like what they offer or you don't. Plain colours are not an option. I bought 3 pairs initially, 2 for myself and 1 for a lady friend who loves everything pink.
However, she also likes her trainer liners to be definitely 'no show' and these are not. The contrast colour surround at the the top of the sock will show. For me it's not a problem, but for others it may be. I haven't discovered what my friend thinks of hers.
I bought another pair of trainers yesterday and my first thought was that I must get another pair of these socks in the colour I haven't yet had to go with them.