This is the jacket we wish we had on our canoe camping trip to Big Bend National Park. With heat-regulating tech and a water-repellent finish, it helps keep you warm and dry when the conditions are anything but. When the day warms up, pack it away in the internal pocket and use the ACG tribiner to hook it to your pack. To create this collection, the ACG team embarked on a canoe camping trip through Big Bend National Park in West Texas. Along the way we spotted rock formations created by smooth, slow moving lava flows that inspired the collection's name.