A Non Inverted Slim or NIS is a front roll, letting go with your front hand and passing the bar from back to front hand, after you are inverted and are falling down to the water.
If you're ready for more detailed lessons, you can buy Progression Pro in the Kiteworld Shop - www.kiteworldmag.com/shop/
To see moves broken down check the Motor Drive section in Kiteworld Magazine or on Kiteworldmag.com here...
