Polo, Muji (MUJI) Boy's Navy Long Sleeve T-shirt 100 110, Long Sleeve Cut and Sew This is a Polo long sleeve T-shirt (size 110) and a navy Muji long sleeve T-shirt (size 100). The Polo one has a layered look. There is a stain on the sleeve as shown in the photo. They are being sold as a set at a reduced price. The Polo shirt is size 110, but it feels like a size 105. For your reference. I plan to list many other items. You can get a discount by using the bundle button.