"Women's Brooks® Shield Hybrid Vest 3.0: When the temperature drops but you still have miles to cover, the Women's Brooks Shield Hybrid Vest 3.0 is the layer that keeps you moving. This running vest is built around strategically placed THERMOLITE® insulation (120gsm) that holds core warmth where you need it most, while zoned breathability prevents you from overheating mid-run. Windproof woven panels block cold gusts, and the DWR-treated fabric - made without PFAS - helps keep the elements out without adding bulk. It's the kind of vest you reach for on those mornings when a jacket feels like too much but heading out without a layer isn't an option.The semi-fitted cut moves with you rather than against you, and the soft collar lining and hand pockets add real comfort on longer efforts. Zip-secure hand pockets keep your essentials in place, and the right pocket includes a stash pocket for smaller items like gels or a key. Draft flap snaps hold the vest in position if you need to unzip for ventilation, and the longer zipper pulls are easy to manage with gloved hands - a small detail that makes a real difference in cold weather. A reflective logo adds low-light visibility, and the vest is made with bluesign®-certified materials. Shell fabrics include 100% recycled polyester and a 78% polyester/22% spandex blend, with a 100% recycled polyester lining and UPF 50+ protection.Why Our Fit Experts Love It""I grabbed this vest for an early morning run when it was cold enough to need a layer but I knew I'd warm up fast. The insulation kept my core comfortable without making me feel overheated, and I really appreciated being able to unzip it mid-run without the vest shifting around. The stash pocket in the right hand pocket is a nice touch - I kept my phone in the main pocket and my gels in the smaller one."" - Hallie, Road Runner Sports Fit Expert, Phoenix AZWho It's Best ForThe Brooks Shield Hybrid Vest 3.0 is a strong choice for women who run through fall and winter and want core warmth without the restriction of a full jacket. If you tend to run warm but still need wind protection on cold mornings, the zoned insulation and windproof panels give you coverage where it counts while letting excess heat escape. It works well as a standalone layer on crisp days or as part of a cold-weather layering system. Runners who like to carry their essentials without a pack will appreciate the secure zip pockets and built-in stash pocket. VIP Family members can take the Shield Hybrid Vest 3.0 for a 90-Day test drive with our Perfect Fit Guarantee."