"RRS® Onyx Grid Fleece Hat: The Onyx Grid Fleece Hat is a unisex winter running hat designed to keep your head warm during cold-weather training without the bulk. The grid fleece construction traps body heat effectively, making it ideal for early morning runs, tempo work, and recovery days when temperatures drop. Built from 95% polyester and spandex with a 230 GSM weight, the fabric balances insulation with breathability so you stay warm without overheating during active use. An elastic fit accommodates most head shapes comfortably, and a reflective logo on the back increases visibility during low-light conditions - a real advantage when training before dawn or after dusk.The anti-microbial treatment resists odor buildup, so you can wear the hat multiple times through heavy winter training cycles before washing. Silicone logo detailing adds durability without adding weight, ensuring the hat maintains its appearance through repeated use. Whether you're heading out for a quick morning run or layering up for a longer winter effort, this hat delivers reliable warmth and visibility when you need it most.Why Our Fit Experts Love It""I wore the Onyx Grid Fleece Hat during an early morning winter run, and the grid technology kept my head warm without feeling restrictive. The reflective logo gave me confidence in traffic, and the anti-microbial treatment meant I could wear it several times before washing."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForThe Onyx Grid Fleece Hat is best for runners and outdoor athletes who train during winter months or in cool conditions. It works well for anyone seeking a lightweight, packable hat for daily training runs and recovery days when warmth matters but bulk doesn't. The unisex design fits most head shapes, making it accessible to all runners regardless of gender. VIP Family members can take the Onyx Grid Fleece Hat for a 90-Day test drive with our Perfect Fit Guarantee."