TekMat Ultra 20 Premium 15″ X 20″ – 1/4″ Thick Oil Resistant Non-Slip Waterproof Stitched Edges Handgun Cleaning Mat for Use with Glock. STITCHED EDGE – TekMat created the original schematic gun cleaning mat; In addition to the oversized design & thick padding, this gun cleaning mat for Glock also features a stitched edge; This premium finish ensures the mat won’t roll and won’t fray.