Is a backpack sized by height?

No — by torso length from C7 to the iliac crest.

Where should the hip belt sit?

Centered on top of your hip bones, carrying most of the weight.

Home › Backpack › torso 41 to 46 cm (about 16 to 18 in)

Backpack size

What size backpack for torso 41 to 46 cm (about 16 to 18 in)?

Recommended size

S pack

If your torso length is torso 41 to 46 cm (about 16 to 18 in), go with S pack. Backpack fit is set by torso length, not your height. Measure from the C7 vertebra to the top of your hip bones (iliac crest).

Size finder — enter your torso length (cm)

Enter your torso length to see your recommended size.

Full backpack size chart

Your torso length	Recommended size
torso under 41 cm (about 16 in)	XS pack
torso 41 to 46 cm (about 16 to 18 in)	S pack
torso 46 to 51 cm (about 18 to 20 in)	M pack
torso 51 to 56 cm (about 20 to 22 in)	L pack
torso 56 cm and up (about 22 in and up)	XL pack

How to measure

Tilt your head forward and find the bony C7 bump at the neck base.
Put your hands on your hip bones, thumbs toward the spine.
Measure the distance between those two points along your spine.

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What changes your size

Heavy multi-day loads	A precise torso fit matters more — measure twice.
Between two sizes	Pick the size that lets the hip belt sit on the iliac crest.
Women-specific fit	Often shorter torso and contoured straps.

FAQ

What size backpack for torso 41 to 46 cm (about 16 to 18 in)?: If your torso length is torso 41 to 46 cm (about 16 to 18 in), the recommended backpack size is S pack.
Is a backpack sized by height?: No — by torso length from C7 to the iliac crest.
Where should the hip belt sit?: Centered on top of your hip bones, carrying most of the weight.