J.Crew Navy and Ivory Buffalo Plaid Wool Blend Popover Shirt Beautiful 1/2 zip popover that's a little heavier than a flannel shirt, more like a lightweight jacket. Cotton/wool/viscose blend. Cozy and cute and made for transitional and fall/winter days. Gently preloved condition. Size: Medium Approx. measurements (lying flat): Chest: 20" armpit to armpit Length: 25.5"