In a previous lesson we learned the verb dekiru (出来る) which means to be able to do something. The same word also means that something is made out of a certian material. Lets take a look at some different materials.
This book is made out of paper = kono hon wa kami de dekite iru
Chair is made out of wood = isu wa ki de dekiteiru
My sushi rolling mat is made out of bamboo = watashi no makisu wa take de dekite imasu (私の巻き簾は竹で出来ています)
That building's windows are made out of glass = ano tatemono no mado wa garasu de dekiteru (あの建物の窓はグラスで出来てる)