Get instant relief from aches and pains with this Kangoo Hot Bag. It takes all the benefits of a traditional hot water bottle to another level of comfort and convenience. Made of durable, 3-layer polypropylene fibre, and pre-filled and sealed, this bag does not require filling. Just charge it up in five to ten minutes and it's ready to keep you warm and comfy for up to two hours! The adjustable strap makes it easy to wear on your back, joints or tummy while walking, sleeping or sitting down. It is great for sore joints, aches, pains and cold beds.