Pick of the Day: Hydrapak Stash Water Bottle

This water bottle collapses to be just 4 inches tall.

What Is It: A water bottle that collapses to be just 4 inches tall.

Why It’s Smart:

• Compact size makes it easy to pack (perfect for filling up after airport security)

• Top and bottom snap together for easy storage

• Wide mouth is easy to fill

• BPA-free

Where to Buy: Available on Amazon.

(Photo: Hydrapak)

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By Caroline Morse Teel

Unfortunately for her bank account, Principal Editor Caroline Morse Teel is powerless to resist a good flight deal. Follow her on Instagram @TravelWithCaroline.

Caroline joined Boston-based SmarterTravel in 2011 after living in Ireland, London, and Manhattan. She's traveled to all seven continents, jumped out of planes, and bungeed off bridges in the pursuit of a good story. She loves exploring off-the-beaten path destinations, anything outdoorsy, and all things adventure.

Her stories have also appeared online at USA Today, Business Insider, Huffington Post, Yahoo, Boston.com, TripAdvisor, Buzzfeed, Jetsetter, Oyster, Airfarewatchdog, and others.

The Handy Item I Always Pack: "Earplugs. A good pair has saved my sleep and sanity many times!"

Ultimate Bucket List Experience: Hiking Mount Kilimanjaro.

Travel Motto: "Don't be boring."

Aisle, Window, or Middle Seat: "Aisle (when the first class private suite isn't available)."

E-mail her at cmorse@smartertravel.com.