Purchased for 7,920 yen at the MEN'S BIGI online store. I haven't worn it often, but I've worn it a few times. It's made of a very lightweight material, and I think it's perfect for spring and autumn. The following is an excerpt from the store product page. Label: UNION STATION Category: Casual Sizes: S, M, L Gender: MENS Material: 95% Polyester, 5% Polyurethane Item Number: M0841FP006 Made in China Waist Hips Rise Inseam Thigh Hem L 85/89 110 28 69 70.6 37 Item Description -Make everyday life more comfortable- The crisp material creates a refreshing feel. The tapered cut towards the hem creates a slim silhouette. A versatile item that suits both clean styling and casual combinations. 【fabric】 AIR LIGHT Light: Excellent lightness Quick dry: Absorbent and quick-drying for a refreshing feel Natural stretch: Stretch material for stress-free wear Easy care: Anti-wrinkle function for a crisp look at all times -Active version- Cation dyeing provides a natural drape and Excellent stretch, making it an active item. The smooth feel creates a refreshing sensation and a non-sticky Comfortable wear is a characteristic. Functional material with excellent functionality. It is lightweight, absorbent, quick-drying, stretchable, and wrinkle-resistant, making it comfortable to wear.