I made another cozy last night! I made the outer layer with 1 layer of flower print+1 layer batting+1 layer of pink felt so the wall can stand up stiffer. I also increased the size of the cozy to a diameter of 12" and a height of 6" so the piggies have more room to turn around. I think I had to cut 38" for the side to go with the 12" diameter. I am wondering if I should make a cover to go with it so they can snuggle in the dark?