Wrist warmers, what are they good for? Well, they act like a haramaki does for your whole body but on your arm. Wear them and your hands will warm up. This is great outdoors if you need to do things with your fingers that needs a bit of fiddling! like doing up zips or getting lids off flasks etc (so great for our many customers who are outdoor swimmers). They are also very handy when at home working on the computer and getting a bit chilly. Many customers with arthritis report that they help with symptoms. They also feel super cosy. A great Christmas present for someone who feels the cold or works outdoors.