Outdoorville original editorial · updated November 14, 2026 · illustrative field photography
Measure torso, not height
Use the manufacturer’s instructions to measure from the specified neck reference to the hip reference. Have someone help and repeat the measurement. Height alone does not establish pack size.
Load it before deciding
Fit the hip belt and shoulder harness with a realistic load. Check whether the adjustment range covers your torso measurement and whether the belt fits your hips.
Separate capacity from fit
A larger capacity is not a larger torso size. Estimate the volume of your actual sleep kit, clothing, food and required supplies before choosing liters.
Worked comparison
If your measured torso is inside two adjacent adjustment ranges, try both with the same load. Favor stable support without pressure points over the label that sounds closest.