Titun igbegasoke ga otutu, eruku ati egboogi-ti ogbo, ṣe ti polyurethane, wọ-sooro, fifẹ-sooro, omije-sooro, ga-agbara, funmorawon-sooro, ga-funmorawon-sooro ati compressive, maximizing awọn ikolu ti mọnamọna absorbers ati awọn orisun omi lati mu iduroṣinṣin ọkọ ayọkẹlẹ pọ si.