保ほ温おん性せい

noun

heat retention; thermal insulation; insulating property

Refers to the ability of a material or product (especially clothing, containers, or building materials) to keep heat from escaping. Often used in product descriptions.

• このジャケットは保ほ温おん性せいに優すぐれている。

  This jacket has excellent heat retention.

• 保ほ温おん性せいの高たかい素そ材ざいを使つかった水すい筒とうです。

  It's a water bottle made of a material with high thermal insulation.