- Treeline Review: How Accurate are Stated Volumes of Backpacking Backpacks? TestChecked 2026-10-21 Supports pack volume vs label Six packs' main compartments filled with pinto beans (April 2021) measured from 20% under to 22% over their claimed volume.
The Gear list models usable pack volume as 90% of the label by default, because labels and real capacity differ.