Gregory Backpack Sizing:
| Torso size | 13" (33cm) | 14" (35.6cm) | 15" (38.1cm) | 16" (40.6cm) | 17" (43.2cm) | 18"(45.7cm) |
19" (48.3cm) | 20" (50.8cm) | 21" (53.3cm) | 22" (55.9cm) |
|
Katmai |
- | - | SM/MD | SM/MD | SM/MD | SM/MD or MD/LG | MD/LG | MD/LG | MD/LG | MD/LG |
|
Kalmia |
- | XS/SM | XS/SM | XS/SM | XS/SM or SM/MD | SM/MD | SM/MD | SM/MD | - | - |
|
Baltoro |
- | - | SM | SM | SM or MD | MD | MD or LG | LG | LG | |
| Deva | - | XS | XS | XS or SM | SM | SM or MD | MD | MD | - | - |
| Paragon | - | - | SM/MD | SM/MD | SM/MD | SM/MD or MD/LG | SM/MD or MD/LG | MD/LG | MD/LG | MD/LG |
| Maven | XS-SM | XS-SM | XS/SM | XS/SM or SM/MD | XS/SM or SM/MD | SM/MD | SM/MD | SM/MD | - | - |
| Octal | - | - | - | SM | SM | SM or MD | MD | MD or LG | LG | LG |
| Optic | - | XS | XS | XS or SM | SM | SM or MD | MD | MD | - | - |
| Zulu | - | - | - | SM | SM | SM or MD | MD | MD or LG | LG | LG |
| Jade | - | XS | XS | XS or SM | SM | SM or MD | MD | MD | - | - |
| Stout | - | - | - | O/S | O/S | O/S | O/S | O/S | O/S | O/S |
| Amber | - | O/S | O/S | O/S | O/S | O/S | O/S | O/S | - | - |
| Wander | O/S | O/S | O/S | O/S | O/S | O/S | - | - | - | - |
| Denali | - | - | S/M | SM | SM or MD | M/D | MD or LG | LG | LG | |
| Alpinisto | - | - | S/M | SM | SM or MD | M/D | MD or LG | LG | LG | |
| Targhee | - | - | S/M | SM | SM or MD | M/D | MD or LG | LG | LG | |
| Miwok | - | - | O/S | O/S | O/S | O/S | O/S | O/S | - | |
| Maya | - | O/S | O/S | O/S | O/S |