通つう気き性せい

noun

air permeability; breathability

Technical term used in materials science, textiles, and product descriptions to indicate how well air passes through a material.

• このジャケットは通つう気き性せいが高たかいので、夏なつでも快かい適てきです。

  This jacket has high breathability, so it's comfortable even in summer.

• 通つう気き性せいの良よい素そ材ざいを選えらぶことが大たい切せつです。

  It is important to choose materials with good air permeability.