Product name:Breathable Helmet Hat Product Size about:15*22cm/5.90*8.66in Product color: As shown in the figure Product Material:polyester product features: 1. BREATHABLE & COMFORTABLE: Our riding helmet liner is designed with mesh for maximum breathability. The breathable fabric helps to wick away moisture and sweat, keeping your head dry and comfortable during outdoor activities. 2. ELASTICITY AND STRETCH: Made of elastic and stretchy material to ensure comfortable and firm wearing. It is designed to fit most head sizes and can be easily adjusted for a personalized fit. The elastic fabric also provides flexibility and freedom of movement for a more comfortable wearing experience. 3. WARM AND INSULATED: As fall approaches, it is important to keep your head warm during outdoor activities. Our skull cap is insulated and thermal, keeping your head warm and protected from cold weather. It is perfect for biking, motorcycling, hiking and other outdoor adventures. 4. QUICK DRYING AND MOISTURE WICKING: It is made of quick-drying fabric, which helps to absorb moisture and sweat. This feature is especially beneficial during intense physical activities as it helps keep the head dry and comfortable. The moisture wicking properties also help prevent odor and buildup. 5. MULTIPURPOSE AND FASHIONABLE: Ours is not only practical but also stylish. It can be worn alone or as a helmet liner for a variety of outdoor activities. The sleek and simple design adds a feel of style to your overall look, making it a versatile accessory for both men and women. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc Breathable Helmet Hat