Safe Heating Formula — Reliable Suitable for All Ages Formulated with iron powder, herbal mugwort powder, activated carbon, polymer resin, vermiculite, needle-punched cotton, and soft non-woven fabric to ensure stable, safe heat without irritation. Suitable for all age groups and perfect for winter warmth, travel, commuting, and outdoor activities. Daily Relaxation — Eases Neck Stiffness Fatigue Delivers continuous soothing warmth that helps relax stiff, overworked, or fatigued neck muscles. Ideal for office workers, drivers, students, smartphone users, or anyone experiencing weather-related tension. Great for use at home, at work, or on the go to help restore comfort throughout the day. Soft, Skin-Friendly Ultra-Slim Design Made from breathable, non-irritating non-woven fabric, the strip sits comfortably on the delicate neck area. The ultra-slim 3.7 cm profile ensures a natural fit without adding bulk or causing tightness. Flexible, soft, and designed for all-day wear, with a built-in fastening slit that keeps it secure without limiting movement. No Charging Needed — Portable, Convenient Mildly Aromatic This self-heating neck strip works anytime, anywhere—no battery, charger, or microwave required. Once opened, it warms automatically while releg a subtle herbal aroma from the mugwort blend. Individually foil-wrapped for freshness, each piece is lightweight, clean, and perfect for travel, commuting, long office days, or cold-weather errands. Fast-Acting Warmth — Gentle Steam-Like Heat That Lasts Using upgraded air-activated heating technology, the Comfort Steam Neck Warmer reaches a cozy temperature within 2–3 minutes and maintains a steady 40–45 C (104–113 F) warmth for hours. The infused mugwort and herbal blend produces a soft, steam-like moisture that feels soothing and comfortably warm without drying the skin.