All slippers are able to be used hot or cold, no matter what packaging you get. To heat: Heat in microwave for 30 seconds. Flip & heat for 30 more. <p>Get quick relief from tired or sore feet with Rapid Relief Hot and Cold Therapy Slippers. Blue reusable slippers provide targeted cold or hot therapy to treat foot pain and provide swollen feet relief while reducing swelling.</p> <p>This hot and cold pack relieves foot discomfort and reduces swelling associated with pregnancy as well as multiple health conditions, including:</p> <ul> <li>Arthritis</li> <li>Heel spurs</li> <li>Poor circulation</li> <li>Plantar fasciitis</li> <li>Bursitis and gout</li> <li>Morton's neuroma</li> <li>Neuropathy pain caused by diabetes and chemotherapy</li> </ul> <p>These reusable gel slippers provide soothing comfort for swollen, tired and hot feet caused by pregnancy, neuropathy, post-surgery, uncomfortable footwear and side effects from medications. Manufactured with premium fabric, reusable heating and cooling slippers are easy to use. Gel is included in the top and bottom of the slipper for soothing of the entire foot.</p> <p>Triple-layer, patent-pending premium fabric is tough on the inside and soft on the outside, featuring a protective inner liner impervious to cracking. The fabric is soft enough for direct-to-skin application. Filled with contour-gel, these reusable slippers mimic a hot and cold pack for tired feet, offering an unparalleled therapeutic experience. The inner liner protects against leakage and is flexible when heated or frozen.</p> <p>Benefits of cold therapy include:</p> <ul> <li>Soothes discomforts associated with various conditions.</li> <li>Reduces soreness and swelling.</li> </ul> <p>Advantages of hot therapy include:</p> <ul> <li>Eases aching feet and calms soreness.</li> <li>Encourages fast recovery by healing damaged tissue faster.</li> </ul> <p>To clean your hot and cold gel slippers, wipe clean with water and store in room temperature conditions.</p>