The border in Ireland was extremely porous.

They are extremely porous so that fluid and blood cells can move easily from the bloodstream through their walls.

The traditional thinking is that mushrooms have a high moisture content and are extremely porous.

Similar (but softer and extremely porous) deposits formed from ambient-temperature water are known as tufa.

Jute bags are extremely porous, exposing the coffee to whatever elements it is surrounded by.

The bottom and the top layers are of good quality, but the middle one is extremely porous and weak.

Our shoreline was extremely porous, and Joe saw the holes.

Aerogels are extremely porous and very low in density.

The individual granules are extremely porous with numerous cracks and crevasses.

Because the zeolite is extremely porous, it has a very large surface area and can adsorb large volumes of gas.