Nathan will not keep his covers on at night so in the morning his little feet are bricks of ice. I was looking online one day for larger-size sleep sacks (like the ones used for newborns only bigger) and found some for more than I was willing to pay (up to $50-75 - no thank you). My coworker saw my search and said she could easily make one for Nathan. She found a baby bunting pattern (in size large) on clearance at the fabric store and made 2 sleep sacks for Nathan. Now he is warm and toasty in bed without the covers coming off. He loves his "second jammies". Thank you Mary Ann!!!