Come up with 16 Tiles foam mats and 32 edge borders. The foam mats come with edge borders to give a smooth look. Looks real nice and the interlocking puzzle ends are practically invisible at a distance. The edge borders are easy to interlock or removable. And our tiles connected great and stay together. Please kindly know that there are two different edges that come on the blocks. The rounded for the corners and the others would be a middle piece in a long stretch.