The culmination of years of testing and research, the helix is simply blueseventy's finest suit ever. TST, torsional stretch technology, further isolating the shoulder panels from the body of the suit, to improve flexibility. Combined with the existing quick exit legs, reverse zipper and multi-stretch cuffs, the helix improvements result in uncompromising comfort and performance.  The suit of choice for athletes in the pro ranks, and based on their feedback, has led to enhancements that will not change that perception.