Cold water swim wetsuit launched by Blueseventy

The Thermal Helix is lined with a mid-weight zirconium jersey, chosen because it dries quickly, minimises weight and is flexible.


The suit was tried by professional triathlete Sara McLarty at last year’s Escape From Alcatraz Triathlon where the swim is held in the chilly waters of San Francisco Bay.

 Sara said: “The Thermal Helix made a huge difference in the temperature of my core and extremities while swimming in water below 55 degrees [12 degrees Celsius]. Just like the other Helix models, it maintained it’s flexibility, comfortable fit, and buoyancy in all the right places.” 

“We analysed what the dive and surf industries do for cold-water adventures and we pushed our manufacturing team to establish new ways to glue, stitch and tape,” said Mike Orton, blueseventy’s Brand and Product Manager


The Thermal Helix is available now at select blueseventy retailers and  

Look out for a review in an upcoming issue of 220 Triathlon magazine 
Read a review of blueseventy’s Helix wetsuit here
Find more reviews of the latest swim gear here

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