What Our Gearhead(R) Experts Are Saying:"I've used the Aircontact Core 45+10 SL for everything from hut-to-hut trips to overnight backpacking loops. It's super comfortable for smaller frames, with great adjustability and balance. The ventilation is solid on hot trail days, and I love how the front U-zip gives easy access without digging through the top."When we head out for a fast-paced overnight mission or a minimalist multi-day trek, the Deuter Aircontact Core SL 45+10L Backpack keeps us moving light, cool, and supported. Designed with an SL-specific fit for smaller frames and a shorter torso length, it's built to handle serious miles while maintaining a close, ergonomic carry that moves with us through tough terrain. This pack brings the same technical features of its larger siblings, including the Aircontact back system, breathable mesh paneling, and an adjustable torso length. The 10-liter expansion collar adds flexibility for longer routes, while access points at the top, front, and bottom make packing and unpacking intuitive. With streamlined storage, a hydration sleeve, and thoughtful pocket placement, the Aircontact Core 45+10 SL is ideal for fast-moving treks where fit and function matter most.