NSI line of Anatomic Back Bands break new ground in the development of back bands. For the past 10 years, back bands have provided little or no positive contact or support to the lower back. Most curve out and away from the spine, making contact on either side of the spine but not the spine itself. The adjustable model adds the trick Lumbar Plunger for complete customizing of support and comfort. The plunger can be utilized for straight-on or angled, articulated back support. When the strap and cam buckle are engaged to the desired position, the lumbar plate moves and applies more positive contact to the lumbar region Ratchet buckles with ladder straps which accommodate easy boat entry and are then tightened for supportive contact. Neoprene cover provides a durable and aesthetically pleasing look. NSI back and easily attach to the boat seat mounting bolt for guaranteed secure installation. Designed specifically for touring boats, this 9" tall backband offers the ultimate in touring support, with all the same supportive qualities as the Standard Anatomic models. This Adjustable model allows for customized back support for those all day tours with its unique center section that adjusts the pressure into the center of the spine. Ratchet Buckles with Ladder Straps Included. Complete with NSI Power Posts vertical stays that help keep it from slipping under your butt. Colors available: Black only. Yes I know the picture is blue camo but we are lazy that way.