The Derek Lam 10 Crosby High-Rise Flare Pants feature a slim fit through the waist and thigh, flaring below the knee with full-length press creases for a polished, tailored look. The Derek Lam 10 Crosby High-Rise Flare Pants feature a slim fit through the waist and thigh, flaring below the knee with full-length press creases for a polished, tailored look. 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.