I just love my rice socks, I used some of my sons gym socks(new), and sewed sections so that the rice doesn't pool all in one end. I also took a vest apart and sewed one out of double layers of flannel , sewing pockets into it to keep rice in certain areas kinda large to fit in microwave but it does fit heat it up and then sit in front of computer at 2.44 a.m. reading and writing , researching ways mostly to sleep for more than 3 hours at one time.