THE yellow Puma Bolt Spike Ltd race spikes that helped Usain Bolt reclaim his IAAF World Championship 200m crown in Daegu are the latest innovation of the Theseus II track spike.

In a release, Puma said the world's fastest man first wore this line of spike when he broke the 100 metres world record in New York in 2008, and has continued to wear them through its various evolutions.

The world's fastest man also wore personalised gold Theseus II spikes when he took the 2008 Olympic Games in Beijing by storm, winning three gold medals and breaking two world records in the process. One year later, the same shoe in an orange colourway propelled him to shatter his 100m and 200m world records in the IAAF World Championships in Berlin.

Bolt has worked closely with Puma over the past five years to develop the optimum running shoe and through this collaborative process the Theseus II has evolved into the spike worn today. Microfibre synthetic that match the characteristics of K-leather creates a glove-like fit for the Puma Bolt Spike Ltd, and enhances sprinting efficiency through the stiffness of material.

Microfibre suede lining on the inside creates a soft on-skin feel, and asymmetrical lacing also facilitates comfort and an improved fit. A pebax plate material in the midsole, combined with a 100 per cent woven carbon fibre forefront, helps Bolt gain a higher energy return while powering down the track, and an increased curved and rounded bottom with a lower instep midfoot fit optimises stability while running at a quicker pace. Like Bolt himself, this spike defines fast.