Review on Sandflex Sanding Block 3 Pack by Dustin Gabrielle

I wanted to like them as they seemed like a very clever idea: an easier to use alternative to sandpaper (and doesn't require constant replacement like sandpaper). And while they work adequately, I was disappointed to find a mess of crumbling Sandflex block under my feet (especially when using a rough block). The fact that they fall apart and crumble so easily (causing a huge mess on your table/floor/workpiece) makes them less comfortable to use than sandpaper and/or other abrasives such as ScotchBrite pads or steel wool.