Perfect for Stiff Neck, Sore Shoulders, Spine Pain & More Easily Freeze or Microwave Reusable & Non-Toxic Conforms to Body when Frozen Latex, Lead, Phthalate & BPA Free* Conveniently Holds Temperature for Doctor Recommended Time of Approximately 20 Minutes Dimension: 11.5 in x 13 in The Neck Wrap's wide back and long sides blanket your neck and shoulders simultaneously for twice the relief. Twist it into any position even when it's frozen! It's so lightweight and comfortable you can wear it under a shirt or sweater. Chill it in the freezer, or pop it in the microwave. The wrap holds its therapeutic temperature for a full 20 minutes. Numb the ache with analgesic cold, or soothe and release the tightness with penetrating heat. Your neck and shoulders will thank you. All TheraPearl products are FSA eligible. Cold therapy: Freeze for at least 2 hours.