due to the hard surface and sore back when standing on it for a long time. First choice was cork... but it came in click and lock planks (two widths) or squares. Click and lock is not a good flooring in the kitchen with water... have that currently and dog water bowl has created the underneath to swell, ugh.... loved that floor for comfort but no more click and lock flooring in kitchen for me.... finally decided to go with a new Congoleum product with 'Air Step' that looks like tile but is as comfortable as cork flooring and great news is... it comes in sheets so no seams!