Usage Mode:ManualApplication:headItem Type:Massage & RelaxationMaterial:Composite MaterialSize:Multi Size SMLBrand Name:NoEnName_NullOrigin:Mainland China[Advantages] 1.Creates a quiet, cool and dark environment through proper compression and long-lasting cooling, quickly relieves pain and allows you to sleep easily. 2. Comfortable and stretchable, the best ice pack for headaches and migraines 3. Helps relieve tension, sinus pressure and reduce stress [Usage] Cold therapy. 1. Place the cap flat in the refrigerator at -10 for 1-2 hours, then use immediately. 2. Remove the cap from the refrigerator and wipe off the moisture. 3 Put on the cap and keep it on for about 10-15 minutes. Note: When placing in the refrigerator, please put it in a sealed bag to avoid odor. Hot therapy. 1. Remove from room temperature, lay the hat flat, put it on a clean plate and put it in the microwave. 2. Place the hat in the microwave (power on low) for 10 seconds. If more heat is needed, increase microwave time by 5 seconds. 3. 3. Put on the hat and keep it on for about 10-15 minutes. Note: The temperature should not exceed 55/131F to avoid burning the skin, please adjust to a comfortable temperature before use, if you feel pain, please stop using. [Dear Friend] 1. Due to manual measurement, please allow a slight size error. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. 3. If you are satisfied with our products and services, please give us a positive feedback with a 5-star rating, which is very important to us. We will be grateful if you can leave your real feelings here. 4. If you are not satisfied with the goods or our service, please contact us before leaving any feedback, we will solve the problem immediately, thank you! 5. I wish you a speedy recovery! My friend.