Thank you for viewing! This belonged to my husband, so I don't know the details! The inside of the collar is a little white. Please understand that there may be oversights due to amateur inspection. I'm sorry for the introduction from AI, san :(;ˊ꒳ˋ;): [Design] This denim shirt features a simple yet stylish design. It has two pockets on the front, combining practicality and fashion. [Material] Made of high-quality denim material, it is durable yet provides a soft feel. It is machine washable and easy to care for. [Style] This long-sleeved shirt is perfect for casual styles and is easy to match with various outfits. It can be worn regardless of the season. - Color: Blue - Material: Denim - Style: Long sleeve - Number of pockets: 2 - Design: Button closure - Washing instructions: Machine washable Thank you!