KIRIBAI Waist Thermal Warmer 5pcs is a "targeted, long-lasting self-heating product" designed for waist warmth and comfort, using Japan’s mature self-heating technology. Its core features are:

1. Targeted Waist Design: The warmer has a curved, ergonomic shape that fits the natural contour of the waist—unlike regular rectangular warmers, it adheres closely to the waist without shifting during movement (e.g., walking, sitting), ensuring warmth is focused on the waist.
2. Safe & Long-Lasting Heat: Adopts a multi-layer heat-generating formula (iron powder, activated carbon, vermiculite, salt)—it activates quickly (heats up within 10 minutes) and maintains a stable temperature of 40-55℃ for 8-12 hours. The outer layer uses heat-insulating material to prevent direct contact with skin (avoiding burns) and lock in warmth.
3. Easy to Use & Clean: Each warmer is individually packaged (ensuring freshness and preventing premature activation). It has a self-adhesive backing—peel off the protective film and stick it to the inside of clothing (not directly on skin) for immediate use, with no residue left on clothing after removal.
4. 5-Piece Value Pack: Contains 5 individually sealed warmers—suitable for daily use (e.g., 1 piece per day) or emergency backup, with compact packaging that’s easy to store at home or carry in a bag.
5. Wide Temperature Adaptability: Works effectively in temperatures as low as -10℃ to 20℃—suitable for both indoor (air-conditioned rooms) and outdoor (cold weather commuting) scenarios, meeting diverse warmth needs.

• Made in :Japan

（specific ingredients subject to product packaging; common core components listed below）：
Heat-Generating Core Layer: Iron Powder (main heat-generating ingredient, reacts with oxygen to release heat), Activated Carbon (absorbs oxygen and moisture to promote the reaction), Vermiculite (heat-insulating and temperature-regulating, maintains stable warmth), Sodium Chloride (salt, accelerates the oxidation reaction of iron powder), Water (moisture carrier, necessary for the reaction).
Packaging Layers:
Outer Layer: Non-Woven Fabric (breathable, allows air to enter for the reaction, and prevents heat loss).
Inner Adhesive Layer: Acrylic Adhesive (safe, non-toxic, adheres firmly to clothing without residue).
Protective Film: Polyethylene (PE) Film (covers the adhesive layer before use, preventing contamination and ensuring freshness).

Prepare Before Use: Ensure the waist area is dry (avoid using on damp skin or clothing, as this may affect adhesion or heat generation). Do not open the individual packaging in advance—open it only when ready to use (to prevent premature activation).
Activate the Warmer: Tear open the individual packaging along the easy-tear line—expose the warmer to air (the iron powder reacts with oxygen to generate heat; this is a normal self-heating reaction).
Stick to Clothing: Wait 1-2 minutes for the warmer to start heating slightly. Peel off the protective film from the self-adhesive backing, then stick the warmer firmly to the inside of waist clothing (e.g., underwear, thermal pants)—do not stick directly to bare skin (risk of burns). Ensure the adhesive side faces the clothing, not the skin.
Adjust Position: After sticking, gently press the warmer with your hands to ensure it adheres closely to the clothing and fits the waist contour. Avoid frequent adjustment or peeling off and re-sticking (this may reduce adhesion).
Post-Use Disposal: After the warmer cools down completely (usually after 12-14 hours), remove it from clothing and dispose of it as regular household waste (the heat-generating ingredients are non-toxic and environmentally friendly; do not incinerate or disassemble the warmer).
Safety Notes: Do not use while sleeping (risk of burns if the warmer shifts); do not use on sensitive skin, wounds, or areas with poor circulation (e.g., diabetic patients should consult a doctor first); keep away from children to prevent accidental ingestion or misuse.