PopSonic Cooling & Warming Sphere Trio

This is a set of 3 Pop Sonic Therapy Spheres. The mint color is new in box and sealed, the yellow was tried and the white one is new, but box is kind of messed up. The other boxes have light wear and marks as well. The yellow does not have the instruction book. Please see pics for details. They are kind of hard to find now. Made from durable stainless steel to glide smoothly over your skin, the sphere is filled with advanced liquid that can be used hot or cold for soothing relief. How do I use it: To cool, place entire roller in the freezer for two or more hours. Remove from the freezer to use. To heat, place roller in warm water that is no hotter than 176F for three to five minutes. Carefully remove from the water with tongs to use. Gently roll a sphere on the affected area. Limit application of hot or cold therapy to 15 minutes at a time. Repeat every hour as needed.