The Walter Double-Breasted Blazer is tailored from soft twill with peak lapels, jetted pockets, subtle shoulder pads, and a nipped waist, finished with gold crest buttons. The Walter Double-Breasted Blazer is tailored from soft twill with peak lapels, jetted pockets, subtle shoulder pads, and a nipped waist, finished with gold crest buttons. 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.