For those seeking less plastic in their luggage: This carry-on, from Denmark-based sustainable travel goods brand Kin, features a flax-based hard shell. Designed by veteran industrial designer Boris Berlin, the suitcase is water- (and heat-) resistant, despite its fabric-like looks.

The interior is also lined with a flax-based material, in this case linen.

One thing that might give you pause is the word "most" in the description:

"The Kin Carry-on is a hardcase suitcase designed to fit into the overhead bin of most major airlines and is also well-suited for train and car trips. The suitcase is made out of a sustainable natural fiber shell."

"Its closure is made with a highly durable zipper with a leather trim and it features 360 degree spinner wheels made in Japan."

"It is the first and most sustainable luggage available in an industry that continues to use environmentally harmful plastics."

It also comes in a darker tone:

Here's Berlin himself describing the project and materials choice:

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The more-attractive (to my eye) beige model is currently sold out, though the darker one is in stock. Both run $452.