てい反発 はんぱつマットレスじゃありませんでした
teihampatsumattoresujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 低反発マットレス

1. Was not a low-resilience mattress.; Was not a memory foam mattress.

Past/Perfective
Negative
Polite
Terminal Form