The garment "cups" around the genitals and is usually reinforced with rigid material.

Masks covered the whole head and included a wig mounted upon cloth, only the front being of rigid material.

On the other hand, baskets, being made of more rigid material, may better protect their contents.

These boats are made of rigid materials - often, fibre glass.

Electronic ink can be applied to flexible or rigid materials.

You are building something out of the most rigid material and you've done a good job if you make it look soft.

This bladder is like a balloon, but it is made of much more rigid material.

Engineers develop packages from a wide variety of rigid and flexible materials.

Starting in the late 1970s, improved rigid materials which were oxygen-permeable were developed.

The tube can be made of any rigid material such as steel or plastic.