Trekking backpack DEUTER Aircontact Core 40+10 – lightweight, durable, expandable 40+10 L

DEUTER Aircontact Core 40+10 is a trekking backpack engineered for multi-day hikes and extended outdoor trips. The pack offers a base capacity of 40 litres with an additional 10-litre expandable pocket, combining a lightweight overall construction with robust materials to carry clothing, technical gear and personal items. Designed by DEUTER, this model balances load stability, ventilation and organized storage to support trekking, travel and outdoor activities.

Advantages

The backpack features an expandable main compartment that adapts to changing load volumes and stays compact when not fully packed. Its construction emphasizes durability while keeping weight low, and the harness system is designed for comfortable load distribution during long marches. Multiple external and internal pockets provide straightforward organisation of equipment and quick access to essentials. The pack also integrates practical attachment points for trekking poles and other gear.

Suitable for

• Multi-day trekking and backpacking trips
• Alpine and mountain hikes with variable loads
• Travel where flexible capacity and organised storage are required
• Outdoor activities that demand reliable, durable carry systems

Key specifications

• Volume: 40 litres main capacity with 10 litres expandable extension
• Weight: lightweight construction optimized for multi-day use
• Material: durable textile construction suitable for outdoor conditions
• Carry system: ergonomic harness and hip belt for stable load distribution
• Pockets and access: top lid, external pockets and internal organiser compartments
• Attachment features: provisions for trekking poles and external gear

How to use

Pack heavier and bulkier items close to the back and centre them over the hip belt for better balance and reduced strain. Use the expandable 10-litre section for items needed later in the trip or for flexible storage when you acquire additional gear. Adjust the shoulder straps, sternum strap and hip belt so the load sits comfortably on the hips and the back panel provides adequate ventilation. Arrange small items in external pockets for quick access and secure loose straps before setting off.

Usage recommendations

For longer treks, distribute weight to keep the centre of gravity close to your body and periodically check strap settings during the hike. Treat the fabric with appropriate waterproofing products if prolonged wet-weather exposure is expected, and follow manufacturer care instructions to maintain durability and performance.