Sleep Comfort 4-Inch High Loft Supreme Memory Foam Topper, King Blade is compatible with A5-style detachable clippers Razor sharp cutting edge and long blade life; reliable, smooth-cut steel blades Both the cutter and the comb have a rockwell hardness rating of 62 Made of steel with coating (silver series) Comes with size-5/8 toe blade has a 1/32-inch blade cut The sculpted foam design provides support and additional air flow for improved comfort Originally designed for NASA, this space age foam cradles your body, reducing pressure points that cause tossing and turning Soft memory foam peaks relieve pressure points and rejuvenate tired muscles Reduces tossing and turning for a deep, healthy night's sleep Memory foam is resistant to dust mites and is naturally antimicrobial