These panels are made from 100% polyester knit. They can be used in hidden PUL diapers and won't wick the way that cotton will. The polyester does NOT have a waterproof layer so that needs to be added in some way.
These are sold both individually and as sets of 3. The individual panels are approximately 18.5 x 20
You can not mix and match the panel sets. The unicorn set is the three unicorn panels and the dragon set is the three dragon panels.