AER Go Pack vs Osprey Aphelia Daypack - Women's

These are going to be more suitable for ‘true’ one bagging (ie when you travel without a checked bag). If you decide to opt against a checked bag, perhaps look at a packable day bag and one of your options above, or take a look at the Peak Design Travel Bag, as this is designed with photographers in mind, is effectively a big bucket of a bag, and can expand from 35-45l (although I think when expanded to the full 45l it is slightly too big for most airlines). For a daily carry, you ideally want to be looking at something 25l or less, even under 20l.

I'm a huge fan of Osprey products, 2 Porters, a Nebula and an Ultralight Stuff Tote. The Aphelia backpack is well made but I have a hard time fitting it into my Osprey line up. It's on the small size for long haul traveling, I'm a bit of a scavenger. I used the Apehlia on multiple bike outtings