MaxSane Reusable Hot and Cold Pack is a gel-filled pack that provides a convenient way to apply hot or cold therapy. Our skin is sensitive to too much heat, dust, stress & many other environmental factors. Then a hot / cool Pad can be the perfect way to relax & rejuvenate. Dual purpose - flexible ice or soothing heat Cold for pain and swelling, heat for muscle aches and stiffness Directions for Use: Cold therapy is recommended for use for the first 48 hours following the injury. Hot therapy should not be used until 48 hours after the injury. This pad can be kept in the refrigerator (for cold therapy) or in to the warm water (for hot therapy) now it is ready to use. Take a break, relax & feel how the hot and cool pad work. For Cold Therapy---Keep it in refrigerator for 15-30 minutes, before use it. If the temperature is too extreme, wrap a thin towel around the mask before using. For Warm Therapy--Keep it in warm water for 5 to 10 minutes, before use it. If the temperature is too extreme, wrap a thin towel around the mask before using.