Here's the breakdown of the description you provided:
Style: Office Wear
Sleeve Length: 3/4 Sleeve
Neckline: Mandarin Neck
Length: Knee Length
Top: Medium Kurta (Tunic)
Bottom: Straight Medium Kurta
Based on the description, it seems to be a black cotton outfit suitable for office wear. The outfit consists of a knee-length tunic (kurta) with 3/4 sleeves and a mandarin neckline. It also includes a straight-cut medium-length kurta.
Please note that without any additional information, such as brand or further details, it's challenging to provide a more specific description or locate the exact item.