Very comfortable and not too soft, does not compress under weight.

[This review was collected as part of a promotion.] Kneeling mats aren't the most exciting thing in the world. At least, they weren't. I will admit that I squealed a little when my new Proflex lightweight mats arrived. There's no shame when the praise is deserved. I'm used to kneeling mats being unusually heavy for their size, and a bit on the squishy side, but these are exactly what they claim to be: lightweight. That doesn't take away from their comfort when in use. I have used them on surfaces from slick concrete to very irregular transitioning surfaces in the Melt Shop, and I haven't felt the underlying surfaces poke at me, yet. They are easy to scoot when you aren't on top of them, but hold firmly in place when you are. The SMALL mat is the easiest of the four sizes to carry around, and is small enough to be shoved in a toolbox or backpack. It's not big enough to allow you to 'walk' around on your knees without moving it, but if you are staying put, it has all the room you need. If you find yourself wadded up in an awkward spot, with a sharp corner poking at your back, this mat can be used to separate you from your nagging irritation. It's not just for kneeling! As always, the distinct branding I have come to expect from Ergodyne shows clearly on each mat, regardless of how dirty it might get, and the uniform grab handle slots make it possible to hang multiples or multisize sets in any workspace for easy use.