I adore these mugs. I bought the green and my only negative comment is that the colour is much bolder than the picture suggests - I kinda wish I had gone for the blue now. On the plus side though, I love the shape - it's very huggy! They keep hot drinks hot for ages, which is great as I have a habit of forgetting them. The capacity of 400ml is spot on ie they hold 400ml with a cm to spare, not 400ml when full to the brim.