Stimulate blood flow to your neck and upper shoulders as you reduce muscle inflammation, swelling, fever and pain with cold therapy. Designed to be used for rehabilitation treatment by physicians at clinics, hospitals and training facilities, ColPaC Neck Contour is made of durable polyurethane and a non-toxic silica gel that remains pliable from one treatment to the next. Count on ColPaC to deliver up to 30 minutes of soothing cool relief from acute pain, swelling and fever. Simply chill the ColPaC for 2 hours in the freezer, remove it, and place a towel between your skin and the pack to avoid irritation. Place your ColPaC flat in the freezer when not in use for best results.