Collar is stretched out. Approximate measurements when laid flat: Width: 46cm Length: 55cm POLO gray striped short-sleeved T-shirt, size M, 100% cotton. - Brand: POLO - Color: Gray/Striped - Size: M - Material: 100% Cotton - Design: Short sleeve/Striped Not recommended for those seeking a perfect item due to home storage. *I have a cat. Please be careful if you have allergies. *Please note that the first person to purchase will be given priority, even if there are price negotiations or questions in the comments. Thank you for looking.