This is a sweat-like material with a textured surface. It's not thick, so I think you can wear it for a long season. I've worn it about 10 times, so please purchase it if you understand that it is a used item. Product Name: Double Face Georgette Crew Neck Pullover Color: Yellow Size: Free Price: ¥10,450 Size Length: Front 67cm, Back 70cm Shoulder Width (dropped): 56cm Body Width: 59cm Hem Width: 55cm Sleeve Length: 46cm Material Main: 49% Polyester, 42% Cotton, 9% Nylon Rib: 95% Cotton, 5% Polyurethane