For hard hats exposed to heat, sunlight, or chemicals, the shell may become chalky, dull, or have a crazing pattern or be less flexible (compare a new and used hard hat by flexing the brim).

The Hard Boiled Hat, first developed in 1919, quickly evolved with better designs and safety measures, including webbing to provide a cushion of space between the helmet shell and a worker's head.

It’s hard to talk about hard-shell carry-on luggage without mentioning Away. The brand was the first of dozens of fashion-forward, mid-range luggage brands when it launched in 2015.

The bargain winners are hard-shell carry-on spinner bags branded by popular retailers. They’re both just under $90 and are among four carry-ons that Consumer Reports recommends.

Water-resistance: Hard shell luggage is generally more water-resistant than soft shell luggage, which can be important if traveling to rainy destinations. Usage: Consider how you’ll use the luggage.

New York Yankees starting pitcher Masahiro Tanaka will wear a hard-shell hat insert after he suffered a concussion July 4, per William Weinbaum of ESPN. "There really wasn't any discomfort when I ...

The Quince Carry-On Hard Shell Suitcase is finally back in stock. Shoppers say the lightweight luggage rolls as smoothly as butter, and it comes with a TSA lock and interior compression system ...

The result: a “hard hat” for flight crews—the H-1 helmet for the Navy and P-1 for the Army Air Forces (forerunner of the Air Force)—that became standard-issue gear in 1947.

For hard hats exposed to heat, sunlight, or chemicals, the shell may become chalky, dull, or have a crazing pattern or be less flexible (compare a new and used hard hat by flexing the brim).