Treat yourself or a friend to one of these lavender warmers to help ease aches and pains. These can be used to soothe sore muscles, in particular the neck and shoulders, ease arthritic pains, help relieve stress, tension and the pain of sports injuries. Simply heat in the microwave for 2 minutes. Use cold by placing in the fridge in a plastic bag until chilled. The warmer can also be used as an alternative to a hot water bottle.