These are a thin cotton so they are great for moderate temperatures. They seem to be holding up well in the wash and are a decent quality, especially for the price.

Update: almost 2 years later, these pants are still going strong. They were big to start with and had lots of room for growing into. She loves these as her sleeping pants and they have not even begun to show signs of falling apart. These are definitely the kind of pants you can use for another kid, pass along, etc. and will stand the test of time.