An excellent colourful concept but I would need to be in the southern hemisphere to consider wearing this at Christmas time as it's quite thin (not that I would call a jersey) and not very windproof. It's likely use is in summer when the weather isn't quite warm enough to be in short sleeves and packs down well if the temperature rises. The sizing isn't generous and the elastic at the end of the sleeves is tight so the jersey won't flap around.