Arc'teryx are a shining light in the outdoor world, consistently innovating in form and color rather than imitating like most others. Our tester loved the "load and go" simplicity of this single-compartment pack. After a heavily laden overnight on the south slopes of Longs Peak, he reported "no pack-flop at all when I jumped rocks. Our tester loved the "load and go" simplicity of this single-compartment pack. After a heavily…