I NEED HELP! PLEEEAAASSSEE!!!

hi, well i gepostet this Frage before but not many people were answering so i thought asking it again would catch someones attention.

i'll give Requisiten toanyone who can give me an answer and i'll become your fan.

i need some names of thermal insulators (MATERIALS THAT KEEP HEAT IN)doesn't matter if ur not sure

so far i got aluminum foil, plastic wrap, polyester fibrefill.

once again, i'll give props.

here's the link to the original question.

link