自じ動どう膨ぼう張ちょう式しき

noun

self-inflating type; automatic inflation type

Used as a noun or noun modifier for devices that inflate automatically, such as life jackets or air mattresses.

• この救きゅう命めい胴どう衣いは自じ動どう膨ぼう張ちょう式しきです。

  This life jacket is the self-inflating type.

• 自じ動どう膨ぼう張ちょう式しきのエアマットを買かった。

  I bought a self-inflating air mattress.