2 in 1 Osprey Backpack Farpoint 55L
I have tried so many different ways to travel, but this 2 in 1 combo back pack is great…You can use the detachable back pack for day hikes or the plane and the main backpack for everything else. I personally am not the lightest packer but this one is great for small trips! 50L . Also when you go with Osprey they come with a warranty to fix or replace it no matter when you bought it!