Do not use this product for any purpose other than fixing the waist. Wear it so that it does not interfere with blood circulation. When using this product, be sure to wear it over your underwear. If you are pregnant or have been hospitalized for backache, please consult your doctor. Do not use the product continuously at bedtime or for a long time (8 hours or more). Do not use if you have an allergic constitution, eczema, or rash. Please consult your doctor. Please keep out of reach of children. There are individual differences in efficacy.