HQ Airglider Airplane Easy (Red/Black) This Model Can Be Adjusted Using Small Metal Strips In The Wings You Can Set A Curve Flight And Optimize The Adjustment Angle Kite Measures 32 cm by 33 cm Through Trial And Error The User Learns About Practical Aerodynamics And The Relationship Between The Start Speed And The Settings Made With A Successful Start And Corresponding Conditions The "Easy Stays Aloft Up To 30 Seconds