The phrase "are often lightweight and" is correct and usable in written English.
It can be used to describe items, concepts, or materials that are not heavy or burdensome, often in a comparative context.
Example: "These applications are often lightweight and easy to navigate, making them ideal for mobile devices."
Alternatives: "tend to be light and" or "are frequently minimal and".
Constrained layer dampers (CLD) are in widespread use for passive vibration damping, in applications including aerospace structures which are often lightweight.
A primary advantage of soft robots is that they can be safer than hard, rigid robots not only because they are soft but also because they are often lightweight.
That idea, propagated by heavy-duty Ford Crown Victoria yellow cabs piloted by life-long drivers in cities they know doesn't hold up, given Ubers are often lightweight hybrids often operating in places less familiar to the driver. .
These plastic frames are often cheaper and lightweight, which can be useful when framing posters.
Newer units are often smaller, lightweight, easy to use and offer outstanding imaging capabilities.
Broad-area insulation systems, such as spray foam or rigid foam panels, are often the lightweight materials of choice for vehicle tanks, but the plumbing elements, feedthroughs, appurtenances, and structural supports all create "hot spot" areas that are not readily insulated by similar means.
Instead of using sports sunscreens, which are often greasy and don't absorb easily, find lightweight sunscreens sold by Neutrogena or other similar brands.
Damping elastomers are often used in lightweight wooden constructions and are believed to have good sound insulating effects.
Many solar panels have protective plastic layers, and wind turbines' blades are often made of lightweight, reinforced plastic.
Fenders and bumpers break easily in a collision because they are often made of lightweight or plastic composite material.
