Butterfly continues to set the industry standard for children's rest mats with this Primary Mat. The heavy duty vinyl used on this mat provides a great sleeping surface and is designed and made with our commitment to excellence. This mat and all our mats have the quality characteristics that you expect from Butterfly by having seams that are not only sewn but double stitched, contains a "high density" foam for comfort and is made right here in America. We back this claim up with our 2 year warranty on this mat. Additionally, our mats are tough, easy to clean, and most importantly provide a soft surface for your children to rest.