The small 2400/3400 Pod fits into any Hyperlite Mountain Gear pack to provide 420 cubic inches of organization and increased efficiency. It fits perfectly into the pack, leaving no inch unused, and it's stackable, and the clamshell design makes it easy to find items quickly. Designed with 100% waterproof Dyneema composite fabric and a water-resistant zipper, the pod also helps weatherproof your pack system.