Knitting - hot water bottle cozy

I've just finished my first knitting project (I have many half finished works on the go so I'm pretty pleased to have finished this one). It's a hot water bottle cozy designed by Erica at Erica Knits. It was a bit tricky as it was my first time on circulars and I lost count of my rows so the moss stitch isn't perfect but it still looks good and does the job, it has to be the coziest thing ever, perfect as a central heating substitute for chilly Sydney evenings.