This decision means that swimmers are free to wear them at the forthcoming World Championships in Rome, and all other competitions, at all levels around the globe.

 

Other suits passed include the X-Glide and Jaked 01, used by France's Alain Bernard and Frederic Bousquet respectively in setting world records last month

 

A panel sent back 136 to manufacturers, which could then modify their designs.

However, the Jaked 01 which was re-submitted without having any modifications, was approved, while the X-Glide, after slight changes to reduce the amount of polyurethane used, was also given the green light..

Steve Nicholls, blueseventy's chief executive, said: “We were confident in the scientific evidence that our suit could not trap air and are grateful for the support of Huub Touissant of the University of Amsterdam in presenting our case to FINA.

 

"We felt strongly that we would not need to make any alterations to it and we’re delighted that the right decision has been made without any form of bias.
 

“The last few weeks have certainly hurt us, with minimal sales in the period of not being on the list.

 

"However, we have been continuing with production to ensure availability for when the decision was reversed.

"We now look forward to the World Championships, where we will have suits available for any swimmers wanting to try them out.

 

"We have been in continuous communication with swimmers throughout this period and this announcement now confirms their suit choice for Rome.

 

"They can now continue their preparation without this distraction."

 

FINA, the world governing body, had introduced the new standards last month after they had been criticised for failing to act more quickly to regulate the water-resistant, buoyancy-aiding suits which have helped smash most of swimming's records in the past year.

Britain's David Davies had worn one of the blueseventy suits when whe he set a British 400 metres freestyle record in March.
 

The Seattle-based company had claimed that models that they had previously been submitted in 2007 and had received approval have also now been removed by FINA from their list of approved suits.

 

They had threatened legal action if the decision had not been reversed.

Nicholls said: "Prior to the latest announcement by FINA, blueseventy had consulted lawyers to get an injunction against the decision.

 

"On consultation with FINA they encouraged us to instead go through their own review process which we have done.

“The most important thing is that swimmers now know where they stand and have a choice about what suit they can wear.

 

"We will do everything we can to ensure that our suits are available and that all swimmers have access to them from all of our global distributors and subsidiaries."