This 3D eye mask headset is a classic and versatile Prussian black. Let me tell you more about these amazing LC-dolida sleep mask headsets! We've designed every detail to make your sleep as comfortable as possible. Unique 6A skin-friendly fabric, upgraded deeper 3D eye cup design, zero pressure on eyes; 15-16 hours of battery life (5 times ahead of competitors); 6 layers of blackout material, zero eye pressure. Spoiler: Don't be surprised if you end up buying an extra one for your bed partner, they will definitely stare at you when they witness its magic. [100% Blackout + Pressure-Free Comfort] Made with 5 layers of blackout fabric, it performs better than competitors (independently tested, 100% blackout compared to the industry average of 95%). Unlike hard masks that cause facial pressure, our 3D memory foam conforms to your face while sealing gaps around your nose and temples. Our breathable 3D memory foam + silk fabric adapts to facial curves without creating pressure, blocking 99.9% of light and being 30% lighter than similar products. [Made to the Highest Standards] We invited an eye mask design team with 85 years of experience to help us develop this new 3D eye mask. This unisex sleep mask is made with precision-cut and hand-stitched thread, which is durable and does not deform, and the edge seams are strong and not easy to crack. The fully adjustable eye mask and shoulder straps ensure a comfortable fit, and it feels like it's custom-made for you. [Large Battery Capacity, Super Long Battery Life] We know how important battery life is for a sleep mask, so we equipped this mask with a large-capacity battery. After a full charge, its battery life far exceeds competitors and can operate continuously for over 15 hours, while most competitors on the market only have a battery life of about 8-10 hours, meaning you can use it for several nights in a row without charging, providing a long-lasting and stable guarantee for your sleep. [Bluetooth Sleep Mask Headphones for Comfortable Music] Listen to your favorite audio comfortably. No more earplugs that hurt your ears! Play your favorite audiobooks, podcasts, soothing music, nature sounds, white noise, or guided meditation. Use the sleep mask to fall asleep anywhere, anytime. Perfect Bluetooth eye mask headphones for air travel, road trips, yoga, audiobooks, and bedtime reading for kids. [Ergonomic Comfort and Washability] It's the mask with the wider contour we tested, from temple to temple, so it can accommodate larger face shapes. Additionally, the Eyemask Bluetooth headphones are easy to keep clean. After washing in the washing machine and dryer, it still retains its contoured shape and adjustable straps, while some other masks start to wear out after just one wash.