This lightweight, low-profile biker cap is perfect for all helmet-requiring activities, including mountain biking, cycling and motorcycle riding! It was designed to sit perfectly on all sized heads under a helmet, but more importantly, looks great if you take the helmet off! This cap-meets-do-rag combo piece suits the style and needs of anyone on two wheels. Thoughtfully engineered to be both sleek and comfortable, there's room to make a statement a large array of colors and patterns. The Comfort Shell™ material makes moisture-wicking and lightweight with a 4-way stretch fit, and features anti-microbial properties with soft, brushed interior. Perfect for tucking under goggles while on the road or wearing under a hat through outdoor activities throughout all seasons of adventuring.