Compact, trail-ready, and hydration-focused, the Oakley 4L Switchback Hydration Backpack is built for outdoor athletes and adventure seekers who demand lightweight performance. Whether you're mountain biking, hiking, or running, this pack keeps your water and essentials within easy reach—without weighing you down.

Key Features

4-Litre Capacity

• Slim, compact size perfect for short hikes, trail rides, and endurance activities where mobility is key.

Integrated Hydration System Compatible

• Internal sleeve accommodates most hydration reservoirs (bladder not included), with hose routing for hands-free hydration on the move.

Durable Lightweight Fabric

• Made with abrasion-resistant materials that hold up to rough terrain and rugged conditions.

Ergonomic Shoulder Straps

• Padded, adjustable straps contour to your body for all-day comfort and balance.

Breathable Mesh Back Panel

• Enhances airflow to reduce heat and moisture build-up during high-exertion use.

Zippered Main Compartment

• Secure storage for trail essentials like snacks, tools, keys, or a windbreaker.

External Bungee System

• Stretch cord on the outside provides quick-access storage for a jacket or helmet.

From trailhead to summit, the Oakley 4L Switchback Hydration Backpack delivers compact convenience, breathable comfort, and on-the-go hydration—designed to keep pace with your outdoor adventures.