Worn less than 10 times, and I had my child wear them when they were using paper diapers, so they seem to be in good condition. The fabric is like a pile knit, and it feels nice against the skin. The size is listed as free (F), but I think they're suitable for sizes up to 90. My child currently wears size 100 pants, and they can still wear these without a problem, but I think they're best up to size 90 if you want a comfortable fit. I started having my child wear them around size 70. Please comment if you have any questions.