It is extremely lightweight but strong enough to withstand the stresses of taking off, flying, and landing.

The boots are made of nylon or other synthetic materials, so they are extremely lightweight.

They are extremely lightweight and easy to pick off.

Most portable sound equipment is extremely lightweight, with flimsy speakers.

This is particularly important for wheels, as they are unsprung weight and the cars intended to carry them were extremely lightweight.

Modern oxygen canisters are an extremely lightweight way to store oxygen.

The operating system is extremely lightweight and heavily optimized for security.

Others have asked whether the towers' extremely lightweight steel construction was especially vulnerable to failure in a large fire.

They are good for women because they are extremely lightweight.

Being made of fiberglass, they are extremely lightweight.