CamelBak Octane LR 70oz Hydration Pack. The CamelBak Octane LR 70oz Hydration Pack is perfect for light and fast rides or runs that require a minimal amount of extra gear. The Octane LR moves the 2 liter Antidote Lumbar Reservoir down around your waist for greater comfort and stability the integrated lumbar compression prevents your hydration from sloshing around. Additionally, its external fill makes replenishing your water supply quick and convenient. On the front there are dual overlapping pockets and a stretch mesh overflow for efficient gear organization. There are also stretch mesh pockets on the harness to keep nutrition, a smart phone, or other essentials within easy reach when you're on the move. For safety, there's a whistle on the harness as well as reflective accents both front and back for enhanced visibility.