Aerus 55L by Bonfus

Ships in 1-2 business days | Based in Lombardia, Italy | Est. 2019

An ultralight pack design with a curved frame for airflow

The Aerus 55L is the ultimate ultralight pack for thru-hikers and backpackers offering exceptional ventilation and comfort. Its adjustable curved frame and tensioned mesh back panel create a breathable gap, reducing sweat on hot hikes and controlling moisture in cold weather to prevent chills and improve safety.

Crafted from ultralight, durable fabrics with taped seams, it’s built for long adventures. With spacious side pockets, spider buckle compression webbing, and an advanced frame-to-hipbelt weight transfer system, the Aerus 55L delivers versatile storage, ergonomic comfort, and trail-ready performance.

Features:

• Internal Frame - the curved, tensioned mesh back panel creates a breathable gap allowing airflow and reduced back contact. The strategically placed anchoring point minimizes horizontal bounce, and it follows the shoulders reducing pressure points and improving fit

• Padded Hip Belt - additional 8mm lumbar padding, 1.5" | 38mm wide webbing for a secure supportive fit

• The rigidity of the mesh panel can be adjusted for optimal comfort and fit at the point where it connects with the hip belt

• Optimal weight distribution with a hip belt that is connected to the frame's bottom end and load lifters on the top