This is a Sonia Rykiel knit. It has some pilling and shows signs of wear overall. There are buttons on both arms, allowing you to adjust the length. The width is 39cm, measured by hand. It's a three-quarter to seven-eighths sleeve, with slightly flared cuffs, making it suitable for layering with a turtleneck or similar underneath. Please understand that this is a pre-owned item stored at home before purchasing.