Night Safety Reflective Strip Design Features a high-visibility reflective strip that keeps you seen in low light, making it ideal for night rides and early morning runs. Soft & Stretchy Milk Silk Fabric Made of lightweight, moisture-wicking milk silk material that keeps sweat away and dries quickly, ensuring all-day comfort. Helmet-Friendly Fit for Adults & Kids The stretchy fabric fits snugly under most bike helmets, with sizes for both adults and kids, making it perfect for family rides. All-Round Sun & Wind Protection Covers your head and ears to block UV rays and wind, keeping you comfortable in all weather conditions. Multiple Color Options Available Comes in 8 vibrant colors for both adults and kids, so you can match your gear or coordinate as a family.