The Derek Lam 10 Crosby Ariana Knit Tank features a crew neck and ribbed detailing around the armholes, making it a chic, versatile piece that can be worn as a layer or on its own. The Derek Lam 10 Crosby Ariana Knit Tank features a crew neck and ribbed detailing around the armholes, making it a chic, versatile piece that can be worn as a layer or on its own. Named after the original NYC flagship store address, Derek Lam launched Derek Lam 10 Crosby in 2011 to elevate and transform everyday style through fit, form, fabric, color, and attitude.