speed ball bag is manufactured from sturdy hide leather with a twin textile layer on the inside due to its well-known durability and non-tear crack properties. The 40.5 cm double end ball can thus withstand years of punching and kicking, making it a perfect fit for precision training, MMA training, Muay Thai training, dodge striking, increasing hand speed, and in developing timing, accuracy, rhythm, endurance. This double end bag is designed to be easily mountable with the addition of heavy duty Nylon Strap for maximum adjustability along with a rubber bungee cord which is stretchable up to 48 inches, grants optimum flexibility in all directions. The stretchable cord can be adjusted to the required height. Our speed punching bag added with pliable and tough Flex-string allows you quick movement during training sessions and returning the ball to its original position even after hard hitting from various angles. This portable double end ball is specifically designed for fighters to enhance their speed and accuracy. This speedball bag is designed using professional mechanics to allow lightening quick action without any effect on its position or value. The top quality base has a reduced center hub which offers speed, precision, balance and durability making it perfect for sparring and training purposes for either boxing or Muay Thai.