https://www.theverge.com/2018/7/23/17601634/peak-design-travel-backpack-kickstarter-pricing-features

Peak Design is expanding its lineup of premium bags with the new $299 Travel Backpack 45L, launching on Kickstarter today and shipping this fall. The Travel Backpack can hold more than the company’s Everyday Backpack, which comes in 20L and 30L sizes. The Everyday, as its name implies, is meant to serve as your essential carryall — and it does that job well if you can swallow the asking price. I see it fairly often on the streets of New York. Several of us at The Verge use the Everyday bag.

But the Travel Backpack is meant for, well, traveling. It’s designed to squeeze as much as possible into a space that’s still compliant with airline carry-on regulations. The bag’s straps can even stow away, making the whole thing easier to shove into an overhead compartment.