Unique Gift and After-sales Guarantee- Our cozy sleeping headphones comes with gift packaging, you can use tech gadgets as unique holiday gifts, such as birthday gifts, Thanksgiving gifts, Christmas gifts, Valentine's Day gifts; If you have any questions about the sleep eye masks, please feel free to contact us, and we'll serve you as soon as possible, as well as provide 30 days full refund without any reason and one year manufacturer's warranty. High Quality and Comfort- Our sleep headphones for side sleepers is made of 60% acrylic and 40% polyester, unlike fiber and wool materials, we are extremely wrinkle-resistant, elastic, and washable(please remember to remove the speakers before washing), so it fits different sizes of head circumference, and you don't have to worry about the deformation that comes from sweaty sports washings, perfect for kids, men, women, and adults. Upgrade Battery and Technology- Unlike other brands, WINONLY bluetooth headband is equipped with a lastest upgraded powerful battery chip, which can last 10-12 hours after 1-2 hours of charging, and its lifespan has been extended to 2-3 years, even if the battery runs out, the headband headphones won't make a beeping sound to disturb your sleep. However, when the volume is too loud and harmful to your hearing, it will emit a prompt sound, greatly protecting your ears. Noise Reduction and Light Blackout- Our headband headphones fits perfectly in your ears without putting pressure on them, minimizing noise from the outside world, so our noise canceling headphones for sleep is perfect for side sleepers, Additionally, these sleep headphones are ergonomically designed with a 95% light blocking rate, providing you with a comfortable sleeping environment. Sleep Headphones, Bluetooth Headband, Wireless Earbuds 3 in 1- WINONLY's upgraded sleeping headphones with bluetooth 5.2 technology provide pure and balanced audio output. These headband headphones wireless can be paired with any smart device, and offer faster and easier connectivity within a range of 49ft. This sleeping headphones are suitable for sleeping and outdoor activities such as jogging and yoga, relaxation, meditation, travel, insomnia, and more.