I picked up a closed cell foam yoga matte for 1.00 at a garage sale. I was able to make 8 knee pads out of it. Looped parachord through the corners at top and bottom and tie it up around the tree. Works great.Nothing for shorter hunts I lean the whole time. Bust out my yoga mat treepad for Oct 25th on when I mix in sitting.
Other: My pack serves double duty as my knee pad.