MDOG Double-sided Micro-pressure Weighted Sleep Mask features a dual-sided design—one side made of breathable, skin-friendly flannel for warmth and comfort, and the other side made of cool, smooth ice silk for a refreshing feel, making it suitable for all seasons. Filled with 250g of scientifically balanced weighted microbeads, it applies gentle micro-pressure to help accelerate sleep onset. The mask naturally slips off after you fall asleep, so it doesn’t need to be worn all night—just wear it before bed. It is machine washable, and it’s recommended to wash it before first use.