PU폼 (Poly Urerthane foam),
https://www.google.co.kr/search?q=PU%ED%8F%BC&sa=N&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&ved=0ahUKEwji9pWay9nYAhWFv7wKHd1iD_04ChCwBAgp
소프트 스펀지(20kg~35kg),
https://www.google.co.kr/search?q=%EC%86%8C%ED%94%84%ED%8A%B8+%EC%8A%A4%ED%8E%80%EC%A7%80&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjQrbzcy9nYAhXFXLwKHdNnAVAQsAQIJQ
해면(불규칙 샐) 스펀지(18kg~20kg),
https://www.google.co.kr/search?q=%ED%95%B4%EB%A9%B4+%EC%8A%A4%ED%8E%80%EC%A7%80&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjM7qnr0tnYAhVEJJQKHQ3JAZkQsAQILQ
마블 스펀지,
https://www.google.co.kr/search?q=%EB%A7%88%EB%B8%94+%EC%8A%A4%ED%8E%80%EC%A7%80&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwj50IrF09nYAhXCp5QKHVtKDGoQsAQIJQ
PE(Poly Ethylene),
https://www.google.co.kr/search?q=pe+polyethylene&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiSiM-V1tnYAhWHJpQKHRxwBjUQsAQIRg
HR 골드 고탄성 스펀지,
https://www.google.co.kr/search?q=%EA%B3%A8%EB%93%9C+%EC%8A%A4%ED%8E%80%EC%A7%80&hl=ko&biw=1745&bih=841&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjXx8iN1dnYAhUIWbwKHagIBn4QsAQIJQ
상세 정보1,
http://blog.naver.com/PostView.nhn?blogId=isafety91&logNo=220609110677
상세 정보2,
http://blog.naver.com/PostView.nhn?blogId=3xtabom&logNo=220804010874
출처: shelter9 - 재난대비 생존공간 원문보기 글쓴이: 손오공