We purchased our first twin-size Naturepedic mattress aprox. 6 years ago. This is our third mattress. The stitching in the mattress is great. They are well made and very sturdy. (They handle kids' jumping very well). I love the fact that from day 1 our mattress did not have any odors. My kids (2 boys, 1 daughter) love their mattresses. Compared to other brands, I feel this mattress is reasonably priced.