展开The Arc'teryx Sentinel LT Jacket is a backcountry touring and big mountain specialist to help you send where few have sent before. With 3-layer GORE-TEX between you and mother nature's harshest conditions, you'll enjoy breathability, waterproofness, and dependability deep in the wild. The fit of these is trim and efficient for comfortable travel over distance while still giving you room for a warmer layer to keep the chills away. The extra length provides more coverage for the deepest days of the year.