40%dacron 进口 【Cozy & Warm】 - Our Wireless Bluetooth Hats are made from the outer 60% acrylic inner layer 40% polyester and are soft and breathable. The exterior is fully stitched and lined with wool lining to keep heat. Skiing, snowboarding, running and exercise are beautiful Christmas gifts or birthday gifts for family and friends. 【WIRELESS TECHNOLOGY】The Latest Bluetooth chipset strongly enhances audio and communications.Bluetooth 5.0 means better sound quality, more stable connection, longer battery life, which is better than Bluetooth V4.2 hat.The Wireless Hat connects stably with cell phones, tablets, laptop and other Bluetooth enabled devices. 【LONG WORKING TIME & WASHABLE】Bluetooth headphones built-in improved rechargeable battery with ONLY 1.5-2 hours charging time, provides up to 10-12 hours working time,300 hours stand by time. Bluetooth modules can easily be removed to wash whenever you need. 【GIFTS FOR MENS WOMEN】 bluetooth beanie hats 【HD HIGH FIDELITY SOUND 】Headphone comes with two speakers with Hi-Fi sound quality offer up to 110DB HD stereo sound, with echo and noise reduction functions,create a 3D stereo effect around your head. A combination of CVC 6.0 noise isolation technology and premium quality acoustic tuning allows you to focus on favorite music and answer calls without skipping or missing one word. 【Washable & Easy Assemble】 - unprecedentedly designed to easily remove or reinstall the headphone speaker driver from the cap in seconds for cleaning. Includes a 100% risk-free 1-year manufacturer customer service .