A Lamson 6" KnifeSafe blade protector (SKU 10112). Official details list tinted blue polypropylene; the spec table lists ABS plastic, blue-white. Rubber pads and locking tabs hold the knife without trapping moisture or touching the edge. Fits Lamson forged 6" utility, 6" fillet, 5" steak, and 5" tomato knives. Does not fit chef's or santoku blades. Overall 6.5" x 2" x 0.75". Dishwasher safe. Designed in the USA, imported (China). Lifetime warranty. Specs from Lamson's KnifeSafe protector page.