Natural lupin heat packs are Australian made and owned. They can be used as either a heat pack or cold pack simply by placing in the microwave or freezer. Targets hip and back pain by relieving muscle pain via natural heat therapy that contours to your body. Strong velcro design makes it easy to move around whilst the heat pack remains in place. 30% lighter than traditional heat packs. Allergy and odour free, with longer lasting heat than traditional wheat bags.