Crafted from a breathable 4.9 oz. With sizes up to 5XL, this top is the perfect blend of style and functionality for healthcare professionals of all shapes and sizes. Chest pocket. Chest Width (Laid Flat) 18 1/4 20 1/4 22 1/4 23 3/4 25 3/4 27 3/4 29 3/4 31 1/4 33 1/4 35 1/4.