The NRS Kayak Roll VHS/DVD demonstrates and explains a smooth and effortless roll. Crystal clear underH2O footage, animation and explanations make this a video you don't want to miss! This two part video is Built for every skill level, beginner to teacher. The progression section presents a step by step learning experience enabling you to learn an effortless roll from scratch. The diagnostic section offers solutions to help you tune-up or teach that labored roll.