I love to learn and adore luxury, so this collection is a winning combination! I also love Hot Water Bottles as I believe them to be the most practical, economical and effective way of keeping warm.
The thing that makes this the only Hot Water Bottle with which you should share your bed, is that alpaca hairs are hollow, and therefore once the air within them is warm, they retain the heat - thus an alpaca hot water bottle will stay warm all night and continue to caress your toes - or any other body part - when you awake in the morning!
Medium size is for the daytime; I like to use my new Alpaca version under my feet when I am working from home (I find that if combined with a light scarf, I am toasty all day). Perfect to curl up with on the sofa when watching a movie or reading, or why not take them to the car and pop on your lap - but remember to keep your hands on the wheel - no stroking!