Is that a knee tube carved in between your knee braces? Sized to fit a Nalgene bottle, it looks like....

Shawn

: I find that a backband provides the best support and flexibility. My seat is
: simple and made from minicell foam with just enough rise to keep the knees
: at an angle to prevent my legs from cramping. I pad the side panels with
: minicell foam for a snug fit. The backband is attached to the coaming in
: order to have it hit the small of my back.

: Bobby