Often the first symptom of prostate cancer is difficulty in urinating. However, because a very common, non-cancerous condition of the prostate, benign prostatic hyperplasia (BPH), also causes the same problem, difficulty in urination is not necessarily due to cancer.
Polar fleece. Blankets made out of polar fleece. Polar fleece is a soft napped insulating fabric made from a type of polyester called polyethylene terephthalate (PET) or other synthetic fibers. Other names for this fabric are Polar Wool, Vega Wool, or Velo Wools.
A baby blanket that's about 34-36 long in both directions, and is made of a light-to medium weight hypoallergenic fabric, like cotton or baby-weight fleece, is probably the best choice. It's large enough to swaddle a newborn, and small enough for an older child to sleep with at night.