The Deuter Aircontact Core 50+10 Graphite-Shale is a high-performance trekking backpack designed for comfortable, energy-efficient load carriage on extended outdoor adventures. It features a total volume of 50 liters with an additional 10-liter expandable capacity, ideal for carrying substantial gear while maintaining ergonomic support and ventilation.

Key technical specifications include a weight of approximately 2160 grams (4.76 lbs), and dimensions of about 78 cm (height) x 31 cm (width) x 26 cm (depth). The backpack is recommended for carrying loads between 15 and 20 kg (33 to 44 lbs) with an adjustable back length range from 42 to 62 cm to accommodate different torso sizes.

The Aircontact System integrates precise ergonomic design to save energy by evenly distributing load weight, reducing strain on the spine during heavy carry. Ventilation is optimized by breathable 3D mesh and large ventilation channels between padding layers that promote airflow, keeping the wearer comfortable for longer durations.

Constructed with durable materials including 500D textured polyamide and 235D recycled polyamide, this backpack prioritizes sustainability and environmental responsibility. It is manufactured without per- and polyfluorinated chemicals (PFAS), commonly used for durable water and dirt repellency but harmful to health and environment. Instead, Deuter applies an eco-friendly Durable Water Repellency (DWR) finish that provides water resistance without introducing harmful chemicals.

Additional ergonomic features include:

• ActiveFit shoulder straps for a close, reliable fit
• A Y-shaped frame combined with mobile hip fins designed to wrap securely and distribute weight effectively around the hips
• An ergonomic trapezoidal lumbar pad for lower back comfort and stability
• Modular gear straps enabling flexible attachment of additional equipment according to activity needs

Overall, the Deuter Aircontact Core 50+10 Graphite-Shale backpack is engineered for serious backcountry users who demand a balance of load-carrying comfort, ventilation, durability, and eco-conscious manufacturing in a versatile, spacious design.