Osprey Siskin 8 Hydration Pack

Osprey Men’s Backpacks

PACK SIZE	One Size	Small	Small / Medium	Medium	Medium / Large	Large	Large / X-Large
Aether, Aether Plus	–	–	17 – 21″	–	–	–	19 – 23″
Aether Pro	–	16 – 19″	–	18 – 21″	–	20 – 23″	–
Archeon 30	17 – 22″	–	–	–	–	–	–
Archeon 45	–	–	17 – 21″	–	–	–	19 – 23″
Atmos AG	–	16 – 19″	–	18 – 21″	–	20 – 23″	–
Atmos 65	–	–	17 – 21″	–	–	–	19 – 23″
Exos	–	16 – 19″	–	18 – 21″	–	20 – 23″	–
Kamber 16	18 – 22″	–	–	–	–	–	–
Kamber 22, 32, and 42	–	–	16 – 20″	–	19 – 23″	–	–
Kestrel	–	–	16 – 20″	–	19 – 23″	–	–
Levity	–	16 – 19″	–	18 – 21″	–	20 – 23″	–
Rook	17 – 22″	–	–	–	–	–	–
Soelden, Soelden Pro	17 – 22″	–	–	–	–	–	–
Stratos	–	–	16 – 20″	–	19 – 23″	–	–
Talon, Talon Pro	–	–	17 – 20″	–	–	–	19 – 22″

Osprey Men’s Hydration Packs

PACK SIZE	One Size	Small / Medium	Medium / Large
Duro	–	33 – 39″ Chest Measurement	37 – 44″ Chest Measurement
Katari	17 – 21″	–	–
Manta	17 – 22″	–	–
Raptor	17 – 21″	–	–
Skarab	17 – 22″	–	–
Siskin	17 – 21″	–	–
Syncro	17 – 21″	–	–

Osprey Men’s Travel Packs

PACK SIZE	One Size	Small / Medium	Medium / Large
Farpoint Travel Pack	–	15 – 19″	18 – 22″
Farpoint Trek	17 – 22″	–	–
Ozone Duplex	17 – 22″	–	–

Please note that the info provided above refers to the Torso Size / Length the pack will fit, and NOT any dimensions of the pack. Below are steps for how to measure your torso length. You should have someone help take this measurement for you so it is accurate.

HOW to MEASURE TORSO LENGTH:
1. Start at the iliac crest, which is the top of the hipbones on the side of your body. These act like a shelf for supporting a pack hipbelt.
2. Touch your chin to your chest to find the C7 vertebrae, the knobby bone at the base of your neck.
3. Make sure you keep your back as straight as possible while measuring.
4. Measure the full length from the C7 vertebrae to the iliac crest. This torso measurement determines what size Osprey pack you should carry. Refer to the size chart above to find your ideal size.
5. If you are in between sizes, it is ideal to try them both on before ordering.

HOW to MEASURE CHEST MEASUREMENT:
Measure around the fullest part of the chest.