King Athletic Announces 30% OFF Promotional Sale Of Its New Speed Rope For Fitness Training. February 11, 2014 – Wilmington, Delaware — King Athletic, developer of the Speed Rope, announces today a 5-day sale on Amazon.com with special coupon code (ZEJHBYXK). The company specializes in developing ergonomically efficient fitness tools that can be used in a wide range of settings and help individuals reach their top performance and fitness training goals. The 30% sale will start February 11, 2014 on Amazon. Based on previous Amazon sale statistics, King Athletic announced through its spokesman Benjamin Davies, that the limited stock might …