In recent years, protective foams have slowly evolved.

Faulty wiring caused some protective foam to catch fire, resulting in some damage to Stevenson's kit.

Sometimes it was not easy to retrieve the small crystals that had been thrust at any angle into the protective foam.

On some occasions, the Helicina aspersa emit a protective foam which enables them to thwart the attack.

On some occasions, the Chondropoma pictum emitted a protective foam which enabled them to thwart the attack.

They also have protective foams on the inner thigh for increased protection from shots.

The plasma cloud had drawn a savage gouge across hundreds of miles of sea bottom, vaporizing the protective foam.

A terrible screech reached the pilot's ears, coming through the protective foam of his Darth Vader helmet.

There was very little protective foam remaining, just a few dabs of blackened cinderlike flakes.

It is found, for example, in car head-rests and in the protective foam used for packing items of electrical and electronic equipment.