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 7.62cm (3") thick layer of prime 45 ILD polyfoam and a bottom layer of 8.9cm (3.5") of prime 75 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 double-stitched with strong dacron thread. All Norbert's Competition Landing Mats have 4" wide velcro pile on short ends for joining to other mats. Velcro for long sides is available at an additional charge. 4" and 8" wide connector flaps may be ordered separately. Standard color is Royal Blue; 14 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.