Ravelry: #350 Willow Vest pattern by SweaterBabe Willow & Root Striped Vest Women's Coats & Jackets in Black White WAO Open Knit V Neck Vest in Copper REVOLVE Willow Down Vest Gorsuch V Neck Vest in Wool Blend Madewell Wilma V Neck Knitted Vest Liam & Company. 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.