Osprey Men's Siskin 12L Mountain Bike Backpack

Color: Obsidian Black
Obsidian Black
Size:
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Description
Features
Specs
Size Chart
Video
Description

Designed to do it all—and hold just enough gear—the Siskin 12 is a mountain biking pack with many of the high-performing features you’d expect from Osprey. The mesh-covered AirScape backpanel provides excellent ventilation and maximum range of motion—go ahead, get sendy. A LidLock attachment on the front of the pack can store a standard size helmet while side compression straps expand to hold a full face helmet.

The main U-zip compartment houses organization pockets for your bike tools and room for a layer, a sandwich, or some light mountain bike padding. Rolled, soft-edge shoulder straps keep the pack stable over technical terrain and ensure no pinching points when full. A dedicated compartment holds an included 2.5-liter reservoir and zippered hipbelt pockets provide easy access to bars during the ride or a bottle opener afterwards.

Features
VARIABLE HELMET CARRY

Includes Osprey's LidLock helmet carry for traditional helmets and front panel upper compression straps for full face helmets.

RESERVOIR INCLUDED

Osprey Hydraulics® LT 2.5L reservoir keeps you hydrated all day long and stores in a dedicated hydration compartment to protect pack contents from accidental spills.

MOUNTAIN BIKE-FOCUSED FEATURES

Multi-pocketed tool organization and large bucket main compartment stores and protects all your essential gear.

RIDE STABILITY

Our rolled, soft-edged harness contours to the upper shoulders to keep the pack close to your body and provide stability.

AIRSCAPE SUSPENSION

Atilon foam framesheet enables dynamic body movement and evenly distrubutes load across the entire backpanel

AIRSCAPE BACKPANEL

Mesh-covered extra deep ridged foam with center air channel allows maximum ventilation while keeping the load close to the body

BIOSTRETCH HARNESS

Soft breathable spacermesh contact surfaces and die-cut foam ventilation. Rolled, soft-edged harness designed to contour the shoulder providing comfort and stability

Specs
  • Main fabric: 900x600D Polyester
  • Accent fabric: 210D Nylon Duramax
  • Bottom fabric: 420HD Nylon Oxford
  • DImensions: 18.5H X 9.1W X 8.7D IN
  • Volume: 732 IN3 / 12 L
  • Weight: 1.44 LBS.
  • Included Osprey Hydraulics® LT 2.5L reservoir by Hydrapak with direct-zip access
  • Magnetic sternum strap bite valve attachment
  • Dual upper side compression straps double as a full face helmet carry
  • Full front panel U-zip to main compartment and tool organization
  • Front panel shove-it pocket
  • LidLock helmet attachment
  • Loop for blinky light attachment (light not included) 
  • Zippered hipbelt pockets
  • Zippered scratch-free, heat-embossed slash pocket
Size Chart

 

This measurement starts at the iliac crest, which is the top of your hipbone on the side of your body that acts like a shelf. From this point, measure to the C7 vertebra, the knobby bone at the base of your neck when you put your head down. Reference the torso length below to match the correct pack size.

HARNESS SIZING

Osprey Xenith, Xena, Aether, Ariel, Atmos and Aura packs offer interchangeable shoulder harnesses. Harness sizing usually corresponds to pack size. A properly fit harness should terminate 2" to 3" beneath the armpit when at the proper torso length. The webbing should not touch the side of the body below the padding.

WOMEN'S SPECIFIC

True function and comfort along with style. We have over 20 years of experience designing women's packs.

PACK'S SHAPE

The pack's shape is patterned to be more narrow and with added depth in the right places. This allows greater freedom of movement and increases stabilization by lowering the position of the load to a more optimal center of gravity. As a result, the load is more proportionately supported on the hips and along the structure of the back.

HARNESS

The shoulder harness is designed with thoughtful angle changes and varying padding thickness to create an anatomical fit for a woman's neck, shoulders and chest. This is balanced with optimizing where the tension from the pack's load is carried. For women, our sternum strap is a key piece in equalizing the pressure across the shoulder harness. The padding used is also specific in order to be more comfortable when carrying a heavy load.

HIPBELT

The hipbelt is designed with thoughtful angle changes and varying padding thickness to create an anatomical fit. The hipbelt is also narrower in height for better comfort so it doesn't dig into the ribs or upper thighs when scrambling or climbing. Most importantly, women's hips are more conically shaped with a larger difference between the waist and hip measurements. We sculpt and angle our hipbelts accordingly for comfortable load transfer and optimal support. Again, the padding used is also specific in order to be more comfortable when carrying a heavy load.

MEN'S / UNISEX SIZING

Men's/Unisex Pack Sizing

WOMEN'S / KID'S SIZING

Women's/Kid's Pack Sizing

 

HIPBELT SIZING

Osprey Xenith, Xena, Aether, Ariel and Variant series packs offer interchangeable hipbelts. To determine hipbelt size, measure around the hips, at the iliac crest, not the waist. The padded portion should wrap well around the hips, leaving a gap of 3" to 6" between the tips of both hip pads when securely tightened.

 

FIXED HIPBELT SIZING
XS
24-45" / 60-114 cm
S
24-45" / 60-114 cm
S/M
26-45" / 65-114 cm
M
27-48" / 69-121 cm
M/L
28-50" / 70-127 cm
L
29-55" / 72-140 cm
O/S
25-50" / 64-127 cm
INTERCHANGEABLE HIPBELT
MEN'S
XENITH | AETHER AG 
S
<31"/79cm
M
30-34" / 76-86 cm
L
33-37" / 84-94 cm
XL
>36" / 91 cm
WOMEN'S
XENA |ARIEL AG 
WXS
<28" / 71 cm
WS
27-31" / 68-79 cm
WM
30-34" / 76-86 cm
WL
>33" / 94 cm
VARIANT
XS
<28"/71cm
S
27-31" / 68-79 cm
M
30-34" / 76-86 cm
L
33-37" / 84-94 cm
XL
>36" / 91 cm
Video