Kydex Sheet .090" - Black 12" x 12" KYDEX is a tough sheath making material. It is waterproof and does not stain, shrink, rot or lose it color or shape. It is heat-formable and available in black. The thickness of this sheet is .090". We stock this material in 1 square foot sheets (12"x 12") or 2 square feet sheets (12"x 24").If you would like instructions for making a KYDEX sheath, go to the shopping cart and select PROJECTS under the heading INFORMATION on the left side of the screen on the HOME page.