Any kind of batting is good. Make sure the quilt can be washed. Patients are cold because they are sitting for (sometimes) several hours receiving cold (room temperature) IV fluids. Many times they sleep because of pre-medications. They get up to go to the restroom and are chilled when they return. If the treatment center has a blanket warmer, put the warm blanket on the patient, then cover with the quilt. It will help hold in the heat longer. The perfect quilt length will allow one end of the quilt to be tucked under the chin and around the shoulders. The other end of the quilt can be draped over the feet and tucked in under the legs. I have seen many beautiful chemo quilts over the years. They are appreciated.