I have just made my 2nd purchase of a chillys bottle. The first was a 750ml in matt black which I ordered for my husband last year. He loved it so much I decided to order a 500ml floral for myself. They really do keep water chilled all day. Only slight complaint is that the pattern on my floral looks ‘smudged’ around the neck of the bottle. This is disappointing but it doesn’t impact on its use and wouldn’t put me off purchasing another.