This is a combination of thin sweatshirt fabric and T-shirt fabric. I think the fabric is suitable for year-round use for temperature regulation in the morning and evening, and for preventing dirt. Please refrain from purchasing if you are concerned about minor details, as I have tried it on to check the size. Size: Neck circumference: 48cm Chest circumference: 86cm Front length: 48cm (excluding neck ribbing) Length: 60cm (excluding neck ribbing) Rib color: Orange for neck and armholes Navy for the hem as an accent. This is a handmade item, so please understand and acknowledge that there may be some size errors or sewing distortions.