I took Kimi's recipe & wanted to give in a gift basket but didn't want to give a sock. LOL!! So, I had bolts of this material that was given to me. It is a heavy T-shirt material. I doubled it & made a rice pack (in the middle)& 2 long grabbers to hold it around neck, back, etc. I used minute rice so it would heat faster................LOL!! No, just by chance, it held one sack of rice!