We use these easy-on reversible fleece jackets on dogs here in the sanctuary.  Whether they have had surgery, have sore joints, overworked muscles, or are just achy from old age, this jacket brings soothing relief. Chill or heat the buckwheat-and-lavender-filled packs and place them right where the dog needs them -- they stay put with Velcro.  The jacket itself is secured with two Velcro straps. Great for keeping senior dogs warm in the winter, too.  XS to XL, as follows:

Each jacket comes with the heat-or-chill packs and a long strap for applying a pack to a lower leg if needed.  Extra pack-and-strap sets are also available on our site.