ADJ.
thin
VERB + IMPERMEABLE
boots, make
IMPERMEABLE + NOUN
membrane, water
adj
Impossible to permeate.
Not allowing passage, especially of liquids; waterproof.
This is impermeable to water.
This fabric is impermeable to water.
The rubber boots are impermeable.
The eardrum is a thin, impermeable membrane.
He glazed his pottery to make it impermeable to water.