Simply place a heated sheet and lay it down to keep your butt warm. The heated sheet is specially designed to quickly increase the temperature so your buttocks will 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 used on the knee. Set Contents: 1 dedicated sachet + 1 dedicated heat sheet included; Special heat sheet ★★; Product Name: Use warm ro; Ingredients: Iron powder, water, activated carbon, salt, vermiculite, hygroscopic resin, wood powder. Size: 4.9 x 3.7 inches (12.5 x 9.5 cm); Temperature: 144°F (65°C); Average temperature: 18 hours (40°C); Last time and more than 1 hours Time) *Display The highest temperature and duration are measured according to the Japanese Industrial Standards and the average temperature is based on urban regulations, so there may be slight differences when used on the human body. ★★Dedicated zaput; Quality indication: Polyester, polyurethane; How to use: After using the included special heat sheet you can use the "On-style" heat sheet for your butt to 104°F (41°C). (1) Remove the dedicated heat sheet from the bag immediately before use. (2) Place the word side up from the dedicated pouch and place it in the chair to use. When the temperature is low during use, gently shake the dedicated heat sheet. In particular, when it cools, you can use up to 2 sheets of "Onstyle Butt 41° F (41° C)" side by side and use it on a fabric-lined chair at room temperature of 41° F (41° C) for 12 hours. Temperature and duration may vary depending on the type of chair and environment. ★ Butt 41 degree deep (1) fast temperature rises and your butt will warm up quickly. (2) The warmth is spread through the dedicated zuffles. ★ Storage Method: Store in a cool place away from direct sunlight. Keep out of reach of children. Store the bag to avoid damage. [Warning] After using the dedicated heat sheet enclosed, you can use the "On-Style heated sheet for your hips 104°F (41°C). If you use other heaters, there is a risk of burning at low temperatures or getting too warm and difficult to feel the temperature. If you use the attached toe, the dedicated duvet may be damaged. When you feel hot while in use, use the non-printed surface (gray side) on the top. When you use it, you may feel hot when you leave it away from the dedicated mattress during use.