This is a mens t-shirt with a collar that can be worn as an inner layer for kimonos, work clothing, jinbei, yukata, etc. When youre kimono, you can easily wear this t-shirt without wearing Nagusa undergarment. Recommended for casual wear or when you want to wear it easily. It is also convenient for adjusting the heat during the sweaty season. Wear it under work clothing, jinbei, yukata, etc., to see the collar as a layered layer, and you can enjoy it as an accent of color. It can also be worn as a t-shirt alone, so it is recommended for uniforms at restaurants and in the hospital. The neck has a button so you can adjust the tightness of the collar at the closed position. The collar opens when you remove the button, making it easy to put on and take off. The material is 100% cotton, so it absorbs sweat well. Available in a wide variety of 9 colors so you can choose the one you like. Color: Navy Blue; Size (Chest Circumference): M 34.6 - 37.8 inches (88 - 96 cm), L 37.8 - 40.9 inches (96 - 104 cm), LL 40.9 - 44.1 inches (104 - 112 cm); Quality: 100% Cotton, Made in Japan.