Osprey Siskin 12 Backpack for Hikers and Outdoor Adventurers
Category: Hydration Pack

Product Insights
Osprey Hydraulics LT 2.5 L Reservoir
The Osprey Hydraulics LT 2.5 L reservoir provides instant hydration access with a quick zip design, ensuring you stay hydrated on the go. A magnetic bite valve attachment secured by a sternum strap ensures a secure and quick drink, even during high-speed rides.
Bike-Specific Comfort Features
Bike-specific, winged shoulder harnesses and air mesh wrap hipbelts offer maximum stability and comfort, ensuring you can tackle the roughest rides with ease. These ergonomic designs distribute weight evenly, providing superior support and minimizing fatigue.
Comprehensive Mountaintop Experiences
Designed for mountain biking, the backpack features a generous volume and is fully equipped with essential features. Hipbelt pockets provide easy access to your essentials, while the LidLock helmet attachment and included tool roll keep your gear organized and secure. Enhanced organization ensures you're prepared for any challenge.
Body-Specific Fit
The Raptor/Raven pack is designed to provide a body-specific fit, ensuring maximum comfort and stability across different body types. Women’s packs are tailored to fit shorter, narrower, and curved body types, providing a snug and personalized fit compared to men’s packs.
Enhanced Storage and Protection
A scratch-free, heat-embossed zippered slash pocket is perfect for storing sunglasses and electronic devices, keeping them safe and secure from scratches and damage.
Key Features at a Glance
- Hydration System: Quick zip access and magnetic bite valve attachment for instant hydration.
- Comfort: Bike-specific shoulder harness and air mesh wrap hipbelt for maximum stability.
- Volume and Features: Generous volume with hipbelt pockets, LidLock helmet attachment, and tool roll.
- Fit: Body-specific design to provide maximum comfort and support.
- Protection: Scratch-free, heat-embossed zippered slash pocket for sunglasses and electronics.