Is the Archeon 40 big enough for overnight trips?

Yes. The 40-liter main compartment holds a sleeping bag, pad, clothes and food for one or two nights if you pack light. Bulky winter gear will be tight.

It is water-resistant, not waterproof. The nylon sheds drizzle and splashes, but heavy rain will soak through seams and zippers over time. Use a rain cover for storms.

How does it compare with the Osprey Talon or Kestrel?

The Archeon is heavier and more urban-styled than the Talon or Kestrel, which are lighter and more ventilated for fast hiking. Choose the Archeon for durability and looks; choose the Talon or Kestrel for weight and airflow.

Does it work as a travel backpack?

Yes. The clean look and zippered access suit travel, and 40 liters fits carry-on limits on many airlines. Check your airline's size rules, since the frame makes it bulky.

What is the harness like on long hikes?

It adjusts well and carries moderate loads comfortably. Some owners report pressure on long, fully loaded days, so try it loaded before a multi-day trip.