porous structure

• spongeAbsorbent cleaning material
• honeycombWax matrix of hexagons
• meshInterlocking open weave
• permeableAllowing substances through
• latticeOpenwork of crossed strips

foam · absorbent · filter · membrane · cellular · breathable · sieve · scaffold · cavities · holes · voids · coral · bone · aerogel · sintered · wicking · drainage · capillary