透湿 とうしつ防水 ぼうすい せい素材 そざいでしょう
tōshitsubōsui sei sozaideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 透湿防水性素材

1. Probably a breathable waterproof material.

Polite
Presumptive
Conjecture