The 1200GT medium width (B) offers proven New Balance technologies in a sturdy, waterproof and supportive package. Breathable Gore-Tex XCR (extended comfort range) provides waterproof protection while offering high breathability. Tough external heel counter aides in supporting the ankle. Vibram outsoles provide the elusive combination of superior traction and durability. Multiple width's available. Gore-Tex XCR Abzorb SBS Heel and Forefoot Rock Stop Stability Web External Counter.