permeable

Capable of being permeated or penetrated, especially by liquids or gases.

That may be permeated; capable of being passed through without rupture or displacement of parts: noting particularly substances that permit the passage of fluids.

Capable of being permeated, or passed through; yielding passage; passable; penetrable; — used especially of substances which allow the passage of fluids

Of or relating to substance, substrate, membrane or material that absorbs or allows the passage of fluids.

allowing fluids or gases to pass or diffuse through