Arthur Betsy Self-Heating Eye Mask Unwind in pure comfort with the Arthur Betsy self-heating eye mask – your perfect companion for relaxation, anytime, anywhere. Simply open the packet and feel the magic begin. As soon as it's exposed to air, the mask gently warms up on its own, reaching a soothing temperature in seconds. Designed to deliver around 20 minutes of calming heat, this self-heating eye mask helps relieve tired eyes, melt away stress, and ease you into a moment of peace – whether you’re at home, on a flight, or winding down before bed. Soft and comfortable, it’s the perfect way to pause and reset. No plugs, no fuss – just open, relax, and let the warmth do the rest.