Platypus Origin 22 Hydration Pack for $36.73. Select in-store pickup at REI to save on shipping. Otherwise shipping is $5.99 for a total $42.72 shipped or free for orders over $50. If needed, use this Filler Tool to qualify for free shipping. Here is a screenshot for your reference. It has a dedicated pocket that holds a 2-liter reservoir, 90° shut-off valve for drinking, HyperFlow bite valve, and SlideLock with secondary reinforcement. Most places have it for over $89.