Nap mats come in all shapes and sizes, just like toddlers! Many manufacturers will include an age range that they deem appropriate for their mat’s size, but you need to look at the overall dimensions yourself. A huge percentage of negative reviews for every single mat are related to the mat being too small, no matter how big the mat was. So be sure to think about how tall your child is now and how fast they are likely to grow in the next year and choose a mat that they can grow into.