A workwear collection so tough, our product team ran out of durability tests. The updated Grindstone Work Jacket retains its Primaloft(R) Silver insulation for plenty of warmth and still boasts 100% windproof protection thanks to WINDSTOPPER(R) by GORE-TEX LABS. But a new exceptionally durable laminated fabric - the result of a collaboration between Gore and Cordura(R) - marks our most durable layers to date.