Osprey Viper 3 O/S wasabi green

A purpose-built hydration pack for mountain biking, combining airflow-focused ergonomics with trail-ready organisation.

The Osprey Viper 3 is a 3-litre hydration pack designed for mountain biking. It ships with a 2.5L Hydraulics™ LT reservoir accessed via an asymmetric zip, while a magnetic sternum strap clip retains the bite valve hose between drinks. The AirScape™ back panel and BioStretch™ harness promote airflow and freedom of movement during extended rides.

Features

• 2.5L Hydraulics™ LT reservoir with asymmetric zip and chevron baffles to maintain shape
• Magnetic sternum strap bite valve retention for quick, one-handed access
• AirScape™ ventilated back panel with BioStretch™ harness for airflow and flexibility
• LidLock™ elasticated helmet attachment system
• Front shove-it pocket, zippered organisation pocket, and stretch mesh harness pocket
• Blinker light attachment strap and reflective graphics for low-light visibility
• Dual upper side compression straps for load stabilisation

Technical Specifications

• Main material: 420HD Pack cloth / Nylon
• Pack capacity: 3 L
• Reservoir capacity: 2.5 L
• Dimensions: 42 × 20 × 17 cm (H × W × D)
• Frame: Frameless
• Fit: Unisex
• Weight: 420 g