Switch on your own warm! Onstyle is a brand that supports the cold woman every day to keep her own by warming her down. Simply insert a heated sheet and lay it down to warm your buttocks. The heated sheet is specially designed to quickly increase the temperature so your buttocks warm up quickly. The temperature lasts approximately 12 hours at 104°F (41°C), and keeps it warm. Can be used repeatedly by replacing the heat sheet. Can also be placed on the knee. Ingredients: Iron powder, water, activated carbon, salt, vermiculite, absorbent resin, wood powder; Specifications: Size: 4.9 x 3.7 inches (12.5 x 9.5 cm); Maximum temperature: 144°F (65°C); Average temperature: 14°F (51°C); Duration: 18 hours (lasts for over 104°F); How to use: (1) Remove the dedicated heat sheet from the bag right before use. (2) Place the letters on the top of the dedicated mattress insert and place it in a chair. When the temperature is low during use, gently shake the dedicated heat sheet. When it gets cold, you can use up to 2 sheets side by side. [Warning] ·Can not be opened until just before use. Please do not use this product in conjunction with other heating appliances such as kotatsuri or stoves. Do not use when sleeping Children, those with disabilities, those with sensitive skin, or for first time use this product with special care. People with heat or blood circulation such as diabetes may cause low temperatures and injuries. Consult a physician when using this product. Do not touch the skin directly. Remove immediately if you feel hot. Do not use in unable condition In the event of burns such as blisters, consult a physician immediately. Low temperature burns are burns that occur when the heating element is heated above your body temperature for a long time. It may happen unnoticed, so please check the condition of your skin from time to time and stop using it immediately if you experience symptoms such as redness, itching, or injury. Do not use for anything other than body warmth. Do not wash or get wet. Remove immediately after heat is completed. After use, discard in accordance with the division set by the city, towns village. This product cannot be eaten. Consult your doctor immediately. Storage Method: Store in a cool place away from direct sunlight. Keep out of reach of children. Store the bag to prevent scratches.