The North Face

Packs
Men's & Women's Adjustable
 SML
Torso 15 - 18in
(38 - 46cm)
17 - 20in
(43 - 51cm)
19.5 - 22.5in
(49.5 - 57.1cm)
Men's & Women's Fixed
 SML
Torso 15 - 18in
(38 - 46cm)
17 - 20in
(43 - 51cm)
19.5 - 21.5in
(49.5 - 51.6cm)
Men's Waist 28 - 31in
(71 - 79cm)
32 - 35in
(81 - 89cm)
36 - 39in
(91 - 99cm)
Women's Waist 25 - 26.5in
(64 - 67cm)
27.5 - 29in
(70 - 74cm)
30 - 32in
(76 - 81cm)
Men's Chest 36 - 38in
(91 - 97cm)
39 - 41in
(99 - 104cm)
42 - 44in
(107 - 112cm)
Women's Chest 33 - 34.5in
(84 - 88cm)
35.5 - 37in
(90 - 94cm)
38 - 39.5in
(97 - 100cm)
Men's Two-Size Fixed
 S/MM/L
Torso 16 - 19in
(40.6 - 48.25cm)
18 - 21in
(45.7 - 53.3cm)
Women's Two-Size Fixed
 S/MM/L
Torso 14 - 17in
(35.6 - 43.2cm)
16 - 19in
(40.6 - 48.3cm)
Notes:
Most packs come in different sizes or have suspensions adjustable to your torso length. The most important thing is to match your torso length with the size of the pack.
Torso:
Measure your torso length by bending your head forward so your chin touches your chest. Feel for the most prominent bump at the back of your neck. Now measure from that point down to an imaginary line connecting the tops of your hips around your back. This works best with a partner's help.