SPEEDYINKS Compatible Black Toner Cartridge Replacement for Panasonic KX-FAT88 & KX-FL421 Printers - 4 Pack | High-Quality Printing for Office Documents, Reports & Business Correspondence

I HAVE SPINAL STENOISIS & I HAVE A VERY HARD TIME WALKING & FALL OFTEN. I I PURCHASED THESE POWER BANDS & THEY WORKED - I HAVE NOT FALLEN ONE TIME SINCE I BOUGHT THEM - I WEAR TWO ON MY RIGHT WRIST - I BOUGHT MY MOTHER ONE AND NOW I A GOING TO PURCHASE TWO FOR MY SISTER - IN - LAW. GOD WILLING I CONTINUE THE GOOD LUCK. THEY ARE A PLUS IN MY BOOK