This is the "Chemical B Sleeveless" from Yamato Michi. I am selling it because it didn't suit me after trying it on. It uses a lightweight and quick-drying polyester material, making it comfortable for hiking, mountaineering, and as an everyday undershirt. The soft, skin-friendly fabric is perfect for summer activities. Will be sent in simple packaging. Color: Olive Size: WOMEN M Material: 100% Polyester No price reduction.