Hot and Cold 3 in 1 brace that adjusts to fit Knee, Ankle or Elbow.For targeted and effective relief from discomfort associated with over-exertion, strains, sprains and stiffness.Features a built in, reusable gel pack that is microwavable and freezable.Also contains 2 extension straps for additional support.Cold therapy that helps treat swelling, sprains, strains and bruising.Hot therapy helps relieve stiffness and fatique and relax tight muscles The Hot and Cold Therapy Braces feature a built-in, reusable gel pack that is microwavable or freezable for targeted, easy to apply hot or cold therapy to help relieve discomfort while gently supporting the injured area.