Pacific Outdoor Equipment made a real light weight mat because they know who was going to be carrying it for the first couple of years: Mom and Dad.   Sized to fit little people at a proportionate 16"W by 48"L (not just a 3/4 length mat).  Built with light and compact 3-season Matrix foam core, 50D Diamond Rip upper and an extra stout 70D 210T bottom.  Included is a permanent marker so that you can record growth by trip on the printed scale.  Alaskan animals keep your little person company and paw prints are a great inspiration to look for tracks in the woods.