Household
A sponge works in the worst possible environment: wet, compressed a hundred times a day, and expected to hold its shape until it wears out.
What matters in this application
01
Absorption and release
Open cells draw water in and release it under pressure - that is the sponge's entire function.
02
Recovery after compression
Low compression set means the sponge doesn't stay flattened after the first few washes.
03
Abrasive layer lamination
A firm layer is bonded to a soft base, so the finished two-layer sponge is cut straight from the block.
