Filled with 100% Natural Lupins with a dash of Lavender ( to help promote relaxation) this large neck/shoulder heat pack is a natural, effective alternative for aches and pains or as a great comforter in cold weather. Designed in a U shape to enable free movement. I use mine whilst driving, vacuuming, surfing the net and relaxing at the end of a busy day. This larger size suits medium to large frame person. Range of colours available