Crafted with soft non-woven fabric, heated eye masks are self-warming and require no microwave or electricity. This self-warming eye mask promotes blood circulation, releases moist steam, and provides a soothing 30-minute spa treatment for instant rejuvenation. Our Hot Eye Masks maintain a gentle, constant temperature of around 40℃ (104F) for more than 30 minutes. long-lasting, and comfortable heat therapy experience. Alleviate eye fatigue, moisturize tired eyes, enhance sleep, and diminish dryness, puffiness, and dark circles.