VIVID VEST Grace Willow The Label Women's Multicoloured Willow Vest Brakeburn Willow & Root Oversized Sweater Vest Women's Sweaters in Brown Buckle Harmony Navy Willow Vest Harmony V Neck Vest in Wool Blend Madewell. As a knit sweater vest with a V neck and no sleeves, the Willow Knit Vest is perfect for layering and adding a touch of sophistication to any outfit. Made with high quality materials, it provides comfort and durability while making a statement.