Struggling with coldness or discomfort in your back and waist during winter or your period? This Japanese-made large-area body heat patch is specifically designed for the lower back and waist, offering a significantly larger coverage area than standard heat patches for comprehensive warmth.

• Extra Large Coverage: Designed specifically for the back and waist to provide even heat distribution that fits the body's curves.
• Long-Lasting Heat: Delivers stable heat output to maintain warmth for extended periods, helping to soothe muscle tension caused by cold.
• Comfortable Fit: Made from soft materials that stay in place inside your clothing, making it convenient for office work or outdoor activities.

Usage Scenarios: Ideal for outdoor activities in cold weather, long hours in air-conditioned offices, menstrual back relief, and soothing back muscle tension.

Product Specifications: 2 patches per pack, each measuring approximately 13cm x 19.8cm.

Tips: Apply to the inside of undergarments or clothing; do not apply directly to the skin to avoid burns. Do not use while sleeping.