Fly jumper for Kids CE/SGS Fly jumper High Strength Fibre Glass ... by hard study or on-line game. D.Good for loosing weight (by reducing fatty deposit, waistline, buttocks ... physically and mentally fit and balanced again! D.Good for loosing weight (by reducing fatty deposit, waistline, buttocks, ... up to 9 feet in length. Skyrunner are for the average athletically-inclined person and the professional circus ...