Polo Ralph Lauren Cable-Knit Cotton V-Neck Sweater Vest OVERALL FIT Based on User Reviews Runs Small Runs Large Straight fit. Intended to hit at the hip. Size medium has a 21.5" body length. Body length is taken from the high point of the shoulder. Rib-knit V-neck. Rib-knit armholes. Rib-knit even vented hem. 100% cotton. Machine washable or dry clean. Imported. Model is 5'10" (178 cm) and wears a size small. Style Number: 645351