Expertly combining utility, aesthetics and quality, norbert's fills this 20cm mat with a top layer of 1.375" crosslink, to ensure maximum footing, supported by a 8.9cm (3.5") thick layer of 70 ild polyfoam and a bottom layer of 7.6cm (3") of prime 36 ild polyfoam for optimum energy absorption and compression. covers are fabricated exclusively from rugged 18 oz. vinyl coated polyester; 2" wide nylon webbing handles are strategically placed for easy handling. all seams and attachments are stitched with strong dacron thread. all norbert's competition landing mats have 4" wide loop fastener sewn on the short sides for use under the uneven bars. loop fastener can be sewn on long sides for an additional charge. connector flaps may be ordered separately. standard color is royal blue; other colors are also available at no additional charge. mats made in your choice of non-standard colors may not be returned for full refund. meets or exceeds existing specifications for competition equipment.